SAT prep: Prove that 3x - 4 (5 - x) is equivalent to 7x - 20

What is 4x-9 (-3) = -48?

What is 15 divided by 7.8

5x-x-7=29 then x equals what

Rosy waxes 2/3 of her car with 1/4 bottles of a car wax. at this rate, what fraction of the bottle of car wax will rosy use to wax her entire car?

Average of 34 and 68?

In a family with 7 children, excluding multiple births, what is the probability of having exactly 2 girls? Assume that having a boy is as likely as having a girl at each birth.

A baseball player hit 65 home runs in a season. Of the 65 home runs, 19 went to right field, 23 went to right-center field, 9 went to center field, 11 went to left-center field, and 3 went to left field.

How many milliliters of olive oil (D=0.92 g/mL) have the same mass as 1.80 L of gasoline (D=.74 g/mL)

Leo's family keeps recyclables in a cylindrical trash can. Today Leo bought a larger can with a radius and height that are twice the radius and height of the old can. Leo claims the new and old cans are geometrically similar figures.

The value of Maggie's car decreased by 30% since last year, when she bought it. If the car is now worth $17,000.00, how much was the car worth when she bought it?