The value of an explanatory variable is 23, while the corresponding value of the response variable is 9. What would be the coordinates of this data point when plotted on a scatterplot? A. (9, 32) B. (23, 9) C. (32, 9) D. (9, 23)

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?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Which expression is rational? 6. , square root two, square root 14, square root 49