Anew tire that you need for your bike has a radius of 13 inches. what is the circumference of the tire? use 3.14 to approximate pi. round your answer to the nearest tenth.

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?

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5