Write each expression using exponents: #1- (-3)(-3)(-3)(-3) #2- m*n*m*n*m

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

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.

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth