A balloon is 15 feet above the ground and rising at a rate of 10 feet per minute. A second balloon is 40 feet above the ground and descending at a rate of –2.5 feet per minute. How long will it take for the balloons to be at the same height?

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

X+ y = 5 ; x - y =3 solve using linear combination