Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

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Question 614727: Under what circumstances would the domain be something other than all real numbers? Provide an example.

Click here to see answer by rapaljer(4671)

Question 614733: Find range of
y=[(x+8)/(x-6)] +10
Click here to see answer by stanbon(75887)

Question 615047: HALLAR EL CONJUNTO SOLUCION DE 2X^2-5X+2=X^2-2X+6
Click here to see answer by stanbon(75887)

Question 614522: A student makes a $10.50 purchase at the bookstore with a $20 bill. The store has no bills and gives the change in quarters and fifty-cent pieces. There are 30 coins in all. How many of each kind are there?
How many quartes are there in the change?
How many fifty-cent piece are there?
Click here to see answer by asuar010(338)

Question 616157: if the varies directly as x what is the value of y in these ordered paris?
(5,20) and(15,y)
Click here to see answer by Alan3354(69443)

Question 42696: Hi, can you please tell me what are the excluded values of the following function: (3-5x)/5 ? Thanks!
Click here to see answer by fcabanski(1391)

Question 616226: Find the intersection {2, 4, 6, 8} ( {3, 5, 7}
Click here to see answer by jim_thompson5910(35256)

Question 616217: Graph the system of inequalities.
x+2y is less than or equal to 6
2x+y is less thab or equal to 6
x is greater than or equal to 0
y is greater than or equal to 0
Click here to see answer by solver91311(24713)

Question 616455: How do you decide by looking at a graph or a curve whether y is defined as a function of x?
I did the vertical line test on few of the graphs, and decided that the ones that fail the test aren't a function of x. Is that how you determine if y is defined as a function of x.
Click here to see answer by josmiceli(19441)

Question 616269: If g(x)=1-2x, find the value of (g(x+h)-g(x))/h
Click here to see answer by jsmallt9(3758)

Question 616573: Bayside insurance offers two health plans. Under plan A, Giselle would have to pay the first $200 of her medical bills, plus 30% of the rest. Under plan B giselle would pay the first $220, but only 20% of the rest. For what amount of medical bills will plan B save giselle money? Assume she has over $220 in bills.
Click here to see answer by richwmiller(17219)

Question 616585: Use the compound interest formulas A = P(1 + r/n)^nt and A = Pe^rt to solve.
Find the accumulated value of an investment of $1900 at 10% compounded quarterly for 5 years.
Click here to see answer by ewatrrr(24785)

Question 616616: Use the intermediate value theorem to determine whether the polynomial function has a zero in the given interval.
f(x) = 8x3 - 10x2 + 3x + 5; [-1, 0]

Click here to see answer by ewatrrr(24785)

Question 616620: please help solve.
Use the Factor Theorem to determine whether x - c is a factor of f. If it is, write f in factored form, that is, write f in the form f(x) = (x - c)(quotient).
f(x) = 8x3 + 31x2 + 23x + 6; c = -3

Click here to see answer by solver91311(24713)

Question 616647: what is the answer to (2.6�10⁴)(3.8�10^-1) scientific notation

Click here to see answer by Edwin McCravy(20054)

Question 616621: please help solve thanks!
Use the given zero to find the remaining zeros of the function.
f(x) = x5 - 10x4 + 42x3 -124 x2 + 297x - 306 ; zero: 3i
Click here to see answer by Edwin McCravy(20054)

Question 616804: let h(x)=5x^2 and g (x)=3x+1. What is the product of h (-1) and g (-2)?
Click here to see answer by jsmallt9(3758)

Question 616915: 1. You are given the coordinates of the vertex (2,-2) and of a point (-9,3) on a parabola. Find the coefficients for the equation of the parabola.
Put in y=ax^2+bx+c form.
2.Given the functions
f(x) = 5x2 − 4x + 2
g(x) = 3x + 6
Compute the following (you must simplify each polynomial as far as possible to receive full credit) Use the ^ (shift-6 on the keyboard) to enter a power. So to enter x2 + 3x + 1, you would type x^2 + 3x + 1.
What is f(g(x))?
What is g(f(x))?
Click here to see answer by scott8148(6628)

Question 617100: Determine whether the ordered pair is a solution of the inequality.
(7, 20) ; 5y-6x>4
Is the ordered pair a solution of the inequality?
Click here to see answer by Alan3354(69443)

Question 617099: Two angles are complementary. The sum of the measure of the first angle and one fourth the second angle is 75.75 degrees. Find the measures of the angles.
*what is the measure of the smaller angle?
*what is the measure of the other angle?
Click here to see answer by nerdybill(7384)

Question 617102: Solve then graph.
t+20>=7
The solution is {t l t >= -13}
-what is the solution to the graph on a number line?
Click here to see answer by ewatrrr(24785)

Question 617098: A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-500)+47.95, where it is assumed that t=>500 minutes. What times will keep costs between $89.45 and $132.70?
(Round to the nearest whole number)
Click here to see answer by nerdybill(7384)

Question 617123: can you give me a step by step example..
Click here to see answer by Alan3354(69443)

Question 617189: Find the range of f(x)=-x+4 for the domain {-3,-2,-1,1}
Click here to see answer by nerdybill(7384)

Question 617302: I have a question about "graph the system of inequalities."
X+3y<=9
3x+y<=9
X>=0
y>=0
Click here to see answer by josmiceli(19441)

Question 617385: Draw the graph of f(x). Thanks for your help.
Click here to see answer by jim_thompson5910(35256)

Question 617479: f(-1)=(-1)2-5(-1)+4
What would f(-1) =
Click here to see answer by Maths68(1474)

Question 617780: Solve using the multiplication principle.
-1/2x =-3/4
Click here to see answer by Alan3354(69443)

Question 617794: Find the domain of thr function.
p(x)=x^2-2x+10. What is the domain of p?
Click here to see answer by jim_thompson5910(35256)

Question 617808: Simplify.
-5[-10-(-4-9)]
Click here to see answer by jim_thompson5910(35256)

Question 617809: Solve using the multiplication principle.
9x=-72
Click here to see answer by jim_thompson5910(35256)

Question 617903: can i please have help in solving this linear function. f(x) has slope-2/3 and contains the point f(-3)=0. What is f(0)?
Click here to see answer by nerdybill(7384)

Question 617902: please help me solve this problem. what is the domain of the function f(x)=
x^17+5/x-3
Click here to see answer by nerdybill(7384)

Question 618083: The sum of the squares of two consecutive even integers is 1684. Find the integers.
what are the negative and positive integers? (4 answers)
Click here to see answer by solver91311(24713)

Question 618682: what is the answer for this solution... given g(x)=x�-16 find g(2x�); g(x�-3); g(x+h); g(x)+g(x); g(x+h)-g(x)?
Click here to see answer by Edwin McCravy(20054)

Question 618665: Solve each quadratic in form equation 1.4y^4+9=13y^2
2.x-3x ^1/2+2=0 3.(x-5)^2+2x(x-5)-35=0 4.(x^2-5)^2-13(x^2-5)+20=0
5.(x-2)^2-3(x-2)+2=02
Click here to see answer by ewatrrr(24785)

Question 618726: Find the domain of the function
g(x) = 2/x-15
Click here to see answer by fcabanski(1391)

Question 618896: The function y = 16t2 + 486 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cliff. How long will it take the stone to hit the ground? Round to the nearest hundredth of a second.
Click here to see answer by nerdybill(7384)

Question 618956: 5(x-6)/7 = 3x+4
Click here to see answer by Maths68(1474)

Question 618341: find the rate of growth of the function a(x) = 19(2.046)^x

Click here to see answer by richard1234(7193)

Question 619111: is there a way of determining the maximum subsets of a set?

Click here to see answer by user_dude2008(1862)

Question 619163: What is the solution of function g^2,g^3,g^4,g^5,g^6 and g^30?
The question give :
g(x)=(x-1)/(x+1).
I had ask my teacher,he said
g^4(x)=x
g^8(x)=x
g^12(x)=x
g^16(x)=x
g^20(x)=x
g^28(x)=x
g^2g^28(x)=?
g^2(x)=-(1)/(x)
and can you prove to me why my teacher say like above?
Thank You..

Click here to see answer by Alan3354(69443)

Question 619324: What is the domain of RAE (((a^2)+ 3a -28)/(2a + 14))

Click here to see answer by stanbon(75887)

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