Aworker at a snack stand opened a new box of cups. the first day he used 30 cups , the second day the worker used 15 percent of the remaining cups. a total of 90 cups were used the second day. what was the original amount of cups in the box before any were used?

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?

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0