Find the average rate of change of the function between the given values of x.
21. y = -5x – x? between x = -1 and x = 1

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a