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

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Question 1179946: Use the compound interest formulas A = P(1 + r/n)^nt and A = Pe^rt to solve.

Suppose that you have $11,000 to invest. Which investment yields the greater return over 9 years: 7.5% compounded continuously or 7.6% compounded semiannually?
$11,000 invested at 7.5% compounded continuously over 9 years yields the greater return.
Both investment plans yield the same return.
$11,000 invested at 7.6% compounded semiannually over 9 years yields the greater return.

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Question 1179943: 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 $19,000 at 8% compounded annually for 10 years.

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Question 1179948: Given f(x) = 1/x-5+3, the equation of the vertical asymptote is x = a, and the equation of the horizontal asymptote is y = b.
state the value of a
state the value of b

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Question 1179936: If f(x) = 1/4x+2 and g(x) = −3x^2+2.
determine the value of −3 g(1) 
determine the value of f^−1(1)

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Question 1179888: Given f(x) = 1x−5+3, the equation of the vertical asymptote is x = a, and the equation of the horizontal asymptote is y = b.
state the value of a
state the value of b

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Question 1180021: functions q and r are defined as follows.
q(x)=2x-1
r(x)=-2x^2 +1
Find the value of q(r(3))

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Question 1180033: The function f : R --> R satisfies
f(x) f(y) = f(x + y) + xy for all real numbers x and y. Find all possible functions f.

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Question 1179920: List the transformations, in order, that need to be applied to f(x)  to obtain g(x) = 4f(−13x+1) + 11
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Question 1179937: List the transformations, in order, that need to be applied to f(x)  to obtain g(x) = 4f(−1/3x+1) + 11
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Question 1180067: Please check the google document for the diagram!
a) Determine the area of the inscribed square as a function of x.
b) Determine the domain and range of the area function
c) Determine the perimeter of the inscribed square as a function of x
d) Determine the domain and range of the perimeter function!

https://docs.google.com/document/d/1Cl3HrcoR6jibNzxfDTIilS3imSplLY8nQUU0OpU9vLA/edit?usp=sharing

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Question 1180067: Please check the google document for the diagram!
a) Determine the area of the inscribed square as a function of x.
b) Determine the domain and range of the area function
c) Determine the perimeter of the inscribed square as a function of x
d) Determine the domain and range of the perimeter function!

https://docs.google.com/document/d/1Cl3HrcoR6jibNzxfDTIilS3imSplLY8nQUU0OpU9vLA/edit?usp=sharing

Click here to see answer by ikleyn(52750) About Me 

Question 1180065: g(x) = 3x+4, determine n such that g(-3) = g^-1(n):
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Question 1180065: g(x) = 3x+4, determine n such that g(-3) = g^-1(n):
Click here to see answer by ikleyn(52750) About Me 

Question 1180064: Given f(x) = 2x+3 and g(x) = 4-5x, determine the x-value for which f(2x) = g(1-x).
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Question 1180108: Use the graph of f(x) = 2x to obtain the graph of g(x) = 2x + 2.

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Question 1180114: Use the compound interest formulas A = P(1 + r/n)^nt and A = Pe^rt to solve.
Suppose that you have $10,000 to invest. Which investment yields the greater return over 6 years: 5.4% compounded monthly or 5.5% compounded quarterly?

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Question 1180113: 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 $5000 at 5% compounded monthly for 8 years.

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Question 1180112: A sample of 300 g of lead-210 decays to polonium-210 according to the function given by A (t) =300e exponent -0.032t where t is time in years. What is the amount of the sample after 60 years (to the nearest g)?
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Question 1180110: Use the graph of f(x) = ex to obtain the graph of g(x) = e exponent6x.

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Question 1180109: Use the graph of f(x) = 2x to obtain the graph of g(x) = 1/2 ∙ 2x.
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Question 1180111: The population in a particular country is growing at the rate of 1.7% per year. If 7,638,000 people lived there in 1999, how many will there be in the year 2004? Use f(x)=y o e0.017t and round to the nearest

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Question 1180066: If f(x) = ax+b/cx+d, x ≠ -d/c, -a/c, find f^-1(x)
Click here to see answer by greenestamps(13195) About Me 

Question 1180172: Find the points of intersection of the line y = 7x-42 and the circle with equation x^2+y^2-4x+6y = 12
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Question 1180172: Find the points of intersection of the line y = 7x-42 and the circle with equation x^2+y^2-4x+6y = 12
Click here to see answer by mananth(16946) About Me 

Question 1180171: The function of f(x) = 3x^2+9x-3 has x-intercepts as p and q. So what is the value of p-pq+q?
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Question 1180171: The function of f(x) = 3x^2+9x-3 has x-intercepts as p and q. So what is the value of p-pq+q?
Click here to see answer by greenestamps(13195) About Me 

Question 1180170: For what values of k will the graph of y = 9x^2+3kx+k have no x-intercepts?
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Question 1180170: For what values of k will the graph of y = 9x^2+3kx+k have no x-intercepts?
Click here to see answer by ikleyn(52750) About Me 

Question 1180174: This question is from the CEMC math competition from last year.
The parabola y = -x^2 has vertex labelled P and intersects the x-axis at the points labelled A and B. The parabola translated from it's original position so that its vertex moves along the line y = x+4 to the point Q. In this new position, the parabola intersects the x-axis at the points labelled B and C. What are the coordinates of C?
Please view diagram here:
https://docs.google.com/document/d/1Cl3HrcoR6jibNzxfDTIilS3imSplLY8nQUU0OpU9vLA/edit?usp=sharing

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Question 1180219: A television screen is 40 cm high and 60 cm wide. The picture is compressed to 62.5% of its original area, leaving a uniform dark strip around the outside. What are the dimensions of the reduced picture?
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Question 1180184: A driver leaves his house at 7:00 a.m. and arrives at his work at 8:00 a.m. The maximum speed at which it travels is 45 miles per hour. If the speed is time dependent, describe the reasonable domain. Explain steps
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Question 1180351: Identify the functions that exhibit a removable discontinuity.
a. f(x)=x^2+4x-21/x^2-13x+42
b. h(x)=x-3/x^2-9
c. i(x)=x^2-8x+15/x-5
d. j(x)=x+4/-2x+8
e. g(x)=2x^2-5x+12/2x+3
f. k(x)=2x^2+x-15/2x-5

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Question 1180389: Evaluate each function rule for the given value.
a.) y=.5^x for x=3
b.) f(x)=4.3^x for x=-2

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Question 1180425: A quadratic function in the form of y = ax^2+ bx + 9 has x-intercepts at x = -3 and x = 1. What are the values for a and b?
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Question 1180425: A quadratic function in the form of y = ax^2+ bx + 9 has x-intercepts at x = -3 and x = 1. What are the values for a and b?
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Question 1180426: Determine the value(s) of m so that the quadratic equation mx^2+6x = −m has no real roots.
Click here to see answer by MathLover1(20849) About Me 
Question 1180426: Determine the value(s) of m so that the quadratic equation mx^2+6x = −m has no real roots.
Click here to see answer by ikleyn(52750) About Me 

Question 1180496: If f(x)=2x^2-x-3 and g(x)=2x-6 find (f+g)(x)
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Question 1180496: If f(x)=2x^2-x-3 and g(x)=2x-6 find (f+g)(x)
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Question 1180501: If f(x)=2x^2-x-3 and g(x)=2x-6 find (g-f)(-2)
Click here to see answer by ikleyn(52750) About Me 
Question 1180501: If f(x)=2x^2-x-3 and g(x)=2x-6 find (g-f)(-2)
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Question 1180500: If f(x)=2x^2-x-3 and g(x)=2x-6 find (f-g)(x)
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Question 1180499: If f(x)=2x^2-x-3 and g(x)=2x-6 find (g-f)(x)
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Question 1180498: If f(x)=2x^2-x-3 and g(x)=2x-6 find (f-g)(f)
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Question 1180503: Given the quadratic function y = a(x−5)(x+3)  passes through the point (1, 32).
State the value of a and the y-intercept of this function.

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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