Review the equation, then complete the following. 42+1
f(x) = , 9(x) =
1. Use composition to prove whether or not the functions are inverses of each other.
2. Express the domain of the compositions using interval notation.

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

The function models the number of accidents per 50 million miles driven as a function