If
f(x) = 3x + 1 and f^-1 = x-1/3 ,
then f^-1(7) =
a . 22
b . 2
c . -2

What is the value of y? round to the nearest tenth

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges