Your question is missing formula for m which is given as;
formula for

Answer:
a.the inverse of the function is
.
b.p=12 (thousands)
Explanation:
Given Data:
Formula for
, where m is the total number of months it takes to produce p tennis rackets (in thousands).
Required:
a. Find the inverse of the function.
b. How many tennis rackets will be produced in 20 months? Round your answer to the nearest whole tennis racket.
Solution:
a.Inverse of the function:
![m= (p^3)/(90)\\\\multiply\ both\ sides\ by\ 90\ we\ get\\p^3=m*90\\\\p^3=90m\\\\taking\ cube\ root\ we\ get\\\\p=\sqrt[3]{90m}](https://img.qammunity.org/2021/formulas/mathematics/middle-school/txhb3ewos8ctut32tskd4vd2a7rbqlfolw.png)
the inverse of the function is
........Eq1
b. How many tennis rackets will be produced in 20 months?
put m=20 in Eq1, we get
![p=\sqrt[3]{90*20}\\\\p=\sqrt[3]{1800}\\\\p=12.16](https://img.qammunity.org/2021/formulas/mathematics/middle-school/b0jwjl8rg6wp649boa7yk5l8i8479yn0m3.png)
If we round the answer to nearest whole tennis racket we get p=12 (thousands)
thus, in 20 moths 12 (thousands) tennis rackets will be produced