When 5 is added to 2 times a number, the result is 45. find the number.
a. 20
b. 45
c. 5
d. 2?

Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.