Which is the approximate diameter of a circle with a circumference of 30 m

a. 5 m
b. 10 m
c. 15 m
d. 90 m

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.

Match each set of points with the quadratic function whose graph passes through those points

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2