It took khalid 90 minutes to complete 40 tasks. which answer choice is an equivalent rate? a) 10 tasks in 0.9 minutes b)10 tasks in 2.25 minutes c)10 tasks in 9 minutes d)10 tasks in 22.5 minutes

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

What is the reflection image of (5,-3) across the line y = -x?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?