In a test of short-term memory, the percent of subjects who remember an eight-digit number for at least t seconds is P(t) = 100 - 40 In(t + 1). Find the rate of change of this perce (Enter your answer in percent per second. Round your answer to the nearest integer.) % per second Need Help? Read It 10. [-/3 Points] DETAILS BERRAPCALC7 4.R.042. MY NOTES ASK YOUR TEACHER PRA The given function is a company's price function, where x is the quantity (in thousands) that will be sold at price p dollars. p = 12 - 3In(x) (a) Find the revenue function R(x). [Hint: Revenue is price times quantity, p . x.] R (X ) = (b) Find the quantity (in thousands) and price (in dollars) that will maximize revenue. (Round your quantity to one decimal place, and round your price to the nearest cent.) quantity thousand price Need Help? Read It Submit Assignment Save Assignment Progress