What is 5.67 written in standard form?

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.

Which of the following is true for the relation f(x)=2x^2+1

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys