For the pair of functions, find the indicated composition.f(x) = , g(x) = 3x3Find (g ? f)(x).

A.
B.
C.
D.


Answer: D

Mathematics

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Find decimal notation, round as indicated.  Round to the nearest hundredth.

A. -0.53 B. -0.33 C. -0.54 D. -0.52

Mathematics

Find the system of equations to model the problem. DO NOT SOLVE THIS SYSTEM.If $9,000 is to be invested, part at 13% and the rest at 8% simple interest, how much should be invested at each rate so that the total annual return will be the same as $9,000 invested at 9%? Set up a system of linear equations, letting x1 be the amount invested at 13% and x2 be the amount invested at 8%.

What will be an ideal response?

Mathematics

Solve the problem.A meteor circles the earth in an elliptical orbit. The major axis of the elliptical orbit is 24 × 108  miles long and the minor axis is 14 × 108  miles long. If the earth is at one focus of the orbit what is the distance from the other focus?

A. 2 ×  × 103 mi
B. 2 ×  × 104 mi
C.   × 104 mi
D. 2 ×  × 108 mi

Mathematics

Solve the problem by using two equations with two variables.Jamil always throws loose change into a pencil holder on his desk and takes it out every two weeks. This time it is all nickels and dimes. There are 8 times as many dimes as nickels, and the value of the dimes is $7.50 more than the value of the nickels. How many nickels and dimes does Jamil have?

A. 11 nickels and 88 dimes B. 9 nickels and 72 dimes C. 10 nickels and 80 dimes D. 80 nickels and 10 dimes

Mathematics