Use the maclaurin series for cos(x) to find a maclaurin series for sin^2(x)

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?