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

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Question 1165164: Please help me find g•f and then find f(g(-2))
Using f(x)=2x+3 and g(x)=x^2-4
Click here to see answer by Seutip(231)

Question 1165164: Please help me find g•f and then find f(g(-2))
Using f(x)=2x+3 and g(x)=x^2-4
Click here to see answer by josgarithmetic(39618)

Question 1165226: F(x) = 4x^2 + 6, 0 less than or equal to x less then or equal to 9
Domain and range?
Click here to see answer by Boreal(15235)

Question 1165316: Find a function value, if possible.
f(x)=|x|/x
(a) f(3)
(b) f(-3)
(c) f(x-8)
Click here to see answer by ikleyn(52797)

Question 1165317: Find the value for x for which f(x) = g(x).
f(x)=x^2, g(x)=x+20
Click here to see answer by ikleyn(52797)

Question 1165318: Find the value for x for which f(x) = g(x).
f(x)=x^2+2x+1, g(x)=5x+41
Click here to see answer by ikleyn(52797)

Question 1165339: If tan β = 4/5 then, without a calculator, find tan( π/2 - β) and express the answer as a fraction.
Click here to see answer by ikleyn(52797)

Question 1165340: If cos β = -3/5 then, without a calculator, find cos( π/2 - β) and express your answer as a fraction.
Click here to see answer by solver91311(24713)

Question 1165350: 9. Given 𝑓(𝑥) = {
|𝑥| 𝑓𝑜𝑟 𝑥 < −2
−𝑥 − 1 𝑓𝑜𝑟 − 2 ≤ 𝑥 < 2
1/2𝑥 + 2 𝑓𝑜𝑟 𝑥 ≥ 2
a. Evaluate
𝑓(−5)
𝑓(0)
𝑓(2)
𝑓(10)
c. What is the range of 𝑓?
Those 3 functions make a piecewise function, but I don't know how to evaluate a piecewise function or find the range. Please!!!
Click here to see answer by solver91311(24713)

Question 1165369: Given 𝑓(𝑥) = 𝑥³ − 4𝑥 + 9
Find and simplify: 𝑓(−𝑥) − 𝑓(𝑥)
I'd be grateful if I can get a response on this. Thank you!
Click here to see answer by josgarithmetic(39618)

Question 1165362: A function f is defined for integers m and n as given:
f(mn)=f(m)*f(n)-f(m+n)+1001, where either m or n is equal to 1,
and f(1)=2
a)Find the value of f(9999)
Click here to see answer by Edwin McCravy(20056)

Question 1165365: Given that f(x)=5x^2-3x+7 and f(g(x))=5x^2/9+17x^3/3+21, find all possible values for the sum of the coefficients in the polynomial function g(x).
Click here to see answer by ikleyn(52797)

Question 1165361: Given a function f of a real variable which satisfies the function defined by x*f(2-x)-2*f(x)=x^2+1 for all real x, determine f(x) in terms of x.
Click here to see answer by KMST(5328)

Question 1165776: r(t)=30sqrt(t+2) t=2 find the exact answer of A=
Click here to see answer by ikleyn(52797)

Question 1165873: How do I find the domain and range of "f" on a function graph?
Click here to see answer by MathLover1(20850)

Question 1165893: I'd appreciate a response on this, tried to resolve a few times and couldn't get it right.
Find the average rate of change of the function
f(x)= 3÷2x-4 on the interval [-1,5].

Click here to see answer by ikleyn(52797)

Question 1165971: You receive a coupon for $5 off a pair of jeans. You find that all jeans are 25% off. Let x represent the original cost and the functions define the situation.
What is f(g(x) and what does it represent?
What is g(f(x) and what does it represent?
Click here to see answer by ikleyn(52797)

Question 1166002: Iodine - 131 is a radioactive isotope used in medicine. Its half-life or decay rate of 50% is 8 day. If a patiend is given 25mg of iodine - 131, how much would be left after 32 days or half-lives. Identify C,t,r, and the decay factor. Write down the equation you would use and solve.
Click here to see answer by ikleyn(52797)

Question 1166001: I am a rational function having a vertical asymptote at
the lines x = 3 and x = -3, and a horizontal asymptote y = 1.
If my only x-intercept is 5, and y-intercept is -5/9, What
function am I?
Click here to see answer by greenestamps(13200)

Question 1166140: The population of a certain city increase according to the following formula p=200,000e^0.01t where p is the population and t the number of years, with t=0 corresponding to the year 2000. When will the population be (300,000),(400,000),(500,000)?
Click here to see answer by solver91311(24713)

Question 1166250: g(x)=x^2-10x-3
a. g(-1) b. g(x+2) c. g(-x)
Click here to see answer by themasterofcircuits(27)

Question 1166250: g(x)=x^2-10x-3
a. g(-1) b. g(x+2) c. g(-x)
Click here to see answer by Tatiana_Stebko(1539)

Question 1166376: Describe the transformation that were applied to the parent function f=|x|+20

Click here to see answer by ikleyn(52797)

Question 1166390: A bike store sold the same model of mountain bikes on Monday and Tuesday. On Monday, it generated $6720 in revenue. On Tuesday, it generated $7680 in revenue. Determine the maximum price the store could have charged for each bike. Assume the price is a whole number.
Click here to see answer by solver91311(24713)

Question 1166415: In the NBA this season, the Golden State Warriors has a standing of 15 wins
with 50 losses. The 8th-seeded Portland Trailblazers meanwhile has a standing of 35 wins and 39 losses and was included in the playoffs. Assuming that the Warriors wins all their remaining games, how many games will it take for them to get ahead of the Trailblazers?
Click here to see answer by solver91311(24713)

Question 1166430: Find inverse of function f(x) = x^2 - 5x ?
Click here to see answer by harpazo1965(1)

Question 1166430: Find inverse of function f(x) = x^2 - 5x ?
Click here to see answer by greenestamps(13200)

Question 1166431: How to find the inverse of the function f(t) = t^2 - 2t + 5?
Click here to see answer by solver91311(24713)

Question 1166527: Write a function rule for the are of a rectangle whose length is 8 ft more than it’s width . What is the are of the rectangle when it’s width is 10 ft .write a function for the area A of the rectangle using the independent variable width W
Click here to see answer by josgarithmetic(39618)

Question 1166544: Which of the following relations is a function?
A.
(2, 0), (-5, 3), (9, 1), (-5, 5)
B.
(2, 4), (-5, 2), (9, 1), (-7, 2)
C.
(2, 4), (-5, 6), (2, 3), (-7, 2)
D.
(9, 1), (-5, 4), (2, 1), (9, 2)
Click here to see answer by Edwin McCravy(20056)

Question 1166556: Martin earns $7.50 per hour proofreading ads at a local newspaper. His weekly
wage w can be described by the equation w = 7.5h, where h is the number of hours
A.) Write the equation in functional notation.
B.)Find f(15), f(20), and f(25).

Click here to see answer by solver91311(24713)

Question 1166597: Use the function f(x)= |x-3| to find the rate of change over the desired intervals [0,2] and [4,5]
Click here to see answer by ikleyn(52797)

Question 1166606: A function f is given, and the indicated transformations are applied to its graph (in the given order). Write the equation for the final graph.
1) f(x) = x^3 ; shift upwards 3 units and shift 2 units to the right.
Click here to see answer by solver91311(24713)

Question 1166605: explain how the graph g, is obtained from the graph of f.
1) f(x) = x^3 ; g(x) = (x-1)^3 - 1

Click here to see answer by solver91311(24713)

Question 1166604: suppose the graph of f is given. describe how the graph of each function can be obtained from the graph of f. do not graph.
1) y = f(x) + 4
Click here to see answer by solver91311(24713)

Question 1166616: suppose the graph of f is given. describe how the graph of each function can be obtained from the graph of f. do not graph.
y=2f (x-2) +2
Click here to see answer by greenestamps(13200)

Question 1166614: a function f is given and the indicated transformations are applied to its graph (in the given order). write the equation for the final graph.
f(x) = |x| ; shift to the left 1 unit, stretch vertically by a factor of 3, and shift upward 5 units.
thank you!’
Click here to see answer by greenestamps(13200)

Question 1166648: Find the domain, range, and intercepts of the following function:
g(x)=2x^2-x-3
Click here to see answer by solver91311(24713)

Question 1166649: Find the domain, range, and intercepts of the following function:
ℎ(𝑥)=1+√(1−2𝑥)
Click here to see answer by htmentor(1343)

Question 1166687: EXPLAIN how the graph g is obtained from the graph of f
f(x) = |x| ; f(x) = 2|x| + 3
Click here to see answer by ikleyn(52797)

Question 1166685: suppose the graph of f is given. DESCRIBE how the graph of each function can be obtained from the graph of f. do not graph.
y= f(2x) - 1
Click here to see answer by Edwin McCravy(20056)

Question 1166615: explain how the graph g is obtained from the graph of f.
f(x) = |x| ; g(x) = 2 |x| + 3
Click here to see answer by Boreal(15235)

Question 1166615: explain how the graph g is obtained from the graph of f.
f(x) = |x| ; g(x) = 2 |x| + 3
Click here to see answer by ikleyn(52797)

Question 1166790: A= P+i
Click here to see answer by solver91311(24713)

Question 1166790: A= P+i
Click here to see answer by Theo(13342)

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