During a base jumping lesson, George jumps off a mountain and falls 4.9m during the first second. For each second afterward, he continues to fall 9.8m more than the previous second. After 15s, he opens his parachute. How far did George fall before he opened his parachute?
Maggie got a job working on an assembly line in a tire plant. On the 20th day of work, she assembled 137 tires. She noticed that since She started, every day she assembled 3 more tires than the day before. How many tires did Maggie assemble altogether during her first 20 days?