Use signed numbers to solve. a helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. what was the net gain or loss in altitude? a. lost 2450 ft b. lost 850 ft c. gained 850 ft d. gained 2450 ft

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?