Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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Question 373592: 1800+84x < 2500
-1800 -1800
84x<2500-1800
84x<7000
/84
x<7000/84
x < 83.3 trees
X=83trees ( you can't buy a fraction of a tree)
Would five trees be a solution to the inequality in the above? Justify your answer.

Click here to see answer by mananth(16946)

Question 373796: how many fingers am i holding up.
Click here to see answer by robertb(5830)

Question 373879: One canned juice drink is 30% orange juice; another is 5% orange Juice. How many liters of each should be mixed together in order to get 25L that is 15% orange juice?
30%
5%
Click here to see answer by josmiceli(19441)

Question 373902: Write an equation of the line with the given slope and the given y-intercept. Leave the answer in slope-intercept form. Slope -2/3, y-intercept (0,5)
Click here to see answer by Fombitz(32388)

Question 373849: hoe do you do f(x)=1/2x+6 on a graph
Click here to see answer by Fombitz(32388)

Question 373896: (8,9)9x+y=3
Click here to see answer by Fombitz(32388)

Question 373877: Under plan A Giselle would have to pay the first $80 of her medical bills. plus 40% of the rest. Under Plan B Giselle would pay the first $240 but only 25% of the rest. For what amount of medical bills will plan B Save Giselle Money? Assume she has over $240 in bills.
Giselle would save with plan B if she had more then ?? in bills
Click here to see answer by mananth(16946)

Question 373885: Hockey teams receive 2 points when they win and 1 point when they tie. One season, a team won a championship with 55 points. They won 11 more games then they tied. How many wins and how many ties did the team have.
Click here to see answer by josmiceli(19441)

Question 374009: The following graph shows how a 4-color web printing press depreciates from the year 2006 to the year 2010. It was purchased new in the yeare 2006: therefore x=0 represents the year 2006.
If trend for the depreciated of the press contiuned, what would be its value in the year 2015? Show how you obtained your answer using the equation you found in part c.
Click here to see answer by solver91311(24713)

Question 374220: Please help me with this question!
Given the function k described by K(x) = 3x, find each of the following.
(a) k(-4)
(b) k(5)
(c) k(30)
k(-4)=
k(5) =
k(30)=
Click here to see answer by jim_thompson5910(35256)

Question 374224: Jorge needs 9 3/4 yards of string for one project and 1 15/16 yards of string for a second project. What is the total amount of string needed?
Click here to see answer by robertb(5830)

Question 374319: I don't understand how to work this problem. What is the solution of the system?Solve the system of equations by graphing.
3x - 9y = 9
2x - 6y = -4
Can I see the steps on how to do this problems cause i'm confused?

Click here to see answer by checkley79(3341)

Question 374382: identify the y-intercept y=2x-6
Click here to see answer by ewatrrr(24785)

Question 374971: graph the inequality
y>(x-1)^2 +2
Click here to see answer by Fombitz(32388)

Question 375069: How do I solve this equation? graphing this equation y = -3/4x-3. Been working on it but can't figure it out,I think the y intercept is -3
Click here to see answer by jim_thompson5910(35256)

Question 375072: x+y=4
x-y=2
Click here to see answer by robertb(5830)

Question 375075: How do you find the slope of a line when you are given the line?
Click here to see answer by robertb(5830)

Question 375157: I can't remember graphing at all and am attempting to help my daughter with her home work. Can you explain how to solve the following problem so that I may understand and explain to her?
x=3y
Thank you!
Sam
Click here to see answer by robertb(5830)

Question 375080: how do i graph y=-2x-3
Click here to see answer by checkley79(3341)

Question 375132: i have to graph, y-3=0.6666666667(x+4),can you put it into slope-intercept form for me, i can then graph it thanks.
Click here to see answer by robertb(5830)

Question 375167: what is the vertex of the equation y=-2(x+5)^2+3

Click here to see answer by robertb(5830)

Question 375088: Provide an example of at least five ordered pairs that do not model a function. The domain will be any five integers between 0 and 20. The range will be any five integers between -10 and 10.
Why does the example not model a function?
Click here to see answer by robertb(5830)

Question 375257: y+4<6 solve, then graph
Click here to see answer by Fombitz(32388)

Question 375322: If the inventor in Example 1 charges $4 per unit, then her profit for producing and selling x units is given by the function
P(x) = 2.25 - 7000
What is her profit if she sells 2000 Units?
What is her profit if she sells 5000 units?
What is the break-even point for sales?
Click here to see answer by ewatrrr(24785)

Question 375321: An investor of a new product believes that the cost of producing the product is given by the function:
C(x) = 1.75x + 7000
How much does it cost to produce 2000 units of her invention?

Click here to see answer by nerdybill(7384)

Question 375452: How to find the x-coordinate of the vertex of a parabola passing through the points: (0,5) and (20,5)?
Click here to see answer by ewatrrr(24785)

Question 375479: 31 more than half another number equals 70. What are the two numbers?
Click here to see answer by rfer(16322)

Question 375616: I need to understanding how to do this question on math. Solve using the addition principle. 2x+9>x+18
The Solution set is {x x>___}.
Click here to see answer by robertb(5830)

Question 375636: Graph the equation and identify the y-intercept. y=1/5x
The y-intercept is ____. type an ordered pair.
What is the best way to learn how to do this math?
Click here to see answer by mananth(16946)

Question 375654: find the solution of the system x+y=8 and y=2x+-1 by accurately graphing both lines and determining their point of the intersection
Click here to see answer by mananth(16946)

Question 375566: Im having trouble with this equation. 2-y=x-6 . I don't understand what to do and my project is due November 24, 2010 . Please Help.
Click here to see answer by Alan3354(69443)

Question 375611: A metal stays solid at Fahrenheit temperatures below 1616.9. Determines ( in terms of an inequality) those Clesius temperatures for which the metal stays solid. Use the formula f= 9/5C+32
The solution set is {C|C< } (Round to the nearest tenth)
Click here to see answer by user_dude2008(1862)

Question 375729: determine the quadratic equation for the solutions x = -3 and x = 1.7
Click here to see answer by robertb(5830)

Question 375716: solve and sketch the graph with this equation x^2(y^2-4)=4
Click here to see answer by Fombitz(32388)

Question 375914: f(-2) = 2,f(0) = -4
Click here to see answer by jim_thompson5910(35256)

Question 376041: find an equation of a lone given the slope and one point on the line:
m=2; (3,2)
Click here to see answer by Fombitz(32388)

Question 376003: In standard form, solve y+4=-2/5(x-1). I am confused by the -2/5. I solved the problem like this: y+4= (5)(-2/5)(x-1)
(5)(y+4)=-2(x-1)
5y+20=-2x+2
5y+20-20=-2x+2-20
5y=-2x-18
2x+5y=-18
Is this the right answer? Thank you!
Click here to see answer by Fombitz(32388)

Question 376057: Graph 4x-3y=12 using the slope and y- intercept.
Click here to see answer by nyc_function(2741)

Question 375393: solve inequality
a+8-2a(a-12)>0

Click here to see answer by nyc_function(2741)

Question 376150: x=7
x=-8
Solve the system of equations by graphing the system?
Click here to see answer by Alan3354(69443)

Question 376140: 3x+9y=18
6x_9y=-72
Solve by using elimination method?
Click here to see answer by Alan3354(69443)

Question 376144: One canned juice drink is 30% orange juice, another is 5% orange juice. How many liters of each should be mixed together in order to get 25 liters that is 9% of orange juice.
I tried this problem and came up with some whacky numbers, i think im missing a step, any help would be great.
Click here to see answer by ankor@dixie-net.com(22740)

Question 376149: (-9,4) 2x+y<-5
Is the ordered pair a inequality of the solution?
Click here to see answer by mananth(16946)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975