Kelly is paid $20 to babysit for 8 hours. How much is she paid per hour? A. $2.50
B. $2.00
C. $22.50
D. $12.00

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.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c