25 points , please help : A car travels 100 miles east in 2 hours and 30 miles north in half an hour. What is the average speed of the car?

Simplify this expression.2(10) + 2(x – 4) a. 2x + 16 b. x + 12 c. 2x + 12 d. x + 16

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )

Barrett is comparing the membership fees for two museums. the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?