HELP question is about slope intercept form. here it is

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?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Atransformation t : (x, y) (x-5,y +3) the image of a(2,-1) is