(9w x 0) - 12 and 9w - 12

is it equivalent or not

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?