APFIVE Solving an Inverse Function Equation
For the linear function $$f(x) = 3*x - 5$$, the inverse function is $$f^{-1}(x) = \frac{x + 5}{3}$$. Solve the equation $$f^{-1}(x) = 7$$ for $$x$$.
A
$$21$$
B
$$16$$
C
$$-16$$
D
$$7$$
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | nailah.adilpottayil | 3 | 3 | 1m 01s | 239 |
| #2 | melodymaddahian | 2 | 2 | 0m 42s | 158 |
| #3 | jjduterte | 2 | 2 | 1m 31s | 109 |
| #4 | chunxiangxu.cxu | 1 | 1 | 0m 00s | 100 |
| #5 | varunrajaram1 | 1 | 1 | 0m 00s | 100 |
| #6 | andrew.hsia9 | 1 | 1 | 0m 18s | 82 |
| #7 | gultepemesut | 1 | 1 | 0m 22s | 78 |
| #8 | alainaknorman | 1 | 1 | 0m 22s | 78 |
| #9 | psy0820a | 1 | 1 | 0m 24s | 76 |
| #10 | hekim4066 | 1 | 1 | 0m 28s | 72 |
Items per page:
10
1 – 10 of 18