Which quadratic equation models the situation correctly? h(t) = –16t2 + 61
h(t) = –16t2 + 202.5
h(t) = –16t2 + 56t + 5
h(t) = –16t2 + 56t + 6.5

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

Which of these choices show a pair of equivalent expressions?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *