Minky tosses a coin 50 times and the coin shows head 28 x what fraction of the 50 tosses and turns what percent is this

What is the value of this expression when b= 5 6 (2b-4)

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

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?