Find the average rate of change of f(x)= -x^2+4x+2 from x=3 to x=7

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

The radius of a sphere is 3 inches. which represents the volume of the sphere?