a car is traveling at a speed of 65 mph. the car slows down 18 mph because of traffic, and then increases its speed by 13 mph. what is the car's speed now?
a) 55 mph
b) 60 mph
c) 70 mph
d) 75 mph

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?