The Kendall family was preparing to go hiking with the Smith family. In preparation, the Kendall's Bought eight Cliff bars and four apples for $12.40. The Smith family spent $24.30 on 15 Cliff bars and nine apples. What is the difference in price between the cliff bar and a apple?

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Answer this 30 points and brainliest!