Which function models y, the percent of medicine remaining x hours after the medicine was taken?

Aparallelogram has two side lengths of 5 units. three of its sides have equations y = 0, y = 2, y = 2x. find the equation of the fourth side.

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.