The value of a stock increases gradually at a constant rate at the beginning of the day. The value quickly decreases at a constant rate to below the original value during the middle of the day. It then stays the same for the rest of the day .

How do i work this problem out using the equation a=pe^rt

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?