George is loading freight into an elevator. he notices that the weight limit for the elevator is 1000 lbs. he knows that he weighs 210 lbs. he has loaded 15 boxes into the elevator. each box weighs 50 lbs. identify the rate of change for this situation.

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°