Mia crosses a river when she drives from her house to the beach. The graph of the function d(t) = 40|t − 1.25| shows Mia’s distance from the river d, in miles, after t hours. For this function, what is the average rate of change over the interval 0.5 ≤ x ≤ 1.0?

A. –40
B. –20
C. 20
D. 40

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25