A ball is thrown in the air such that its height, in meters, is modelled by the relation, h=-5(t-2)2+22, where t is time, in seconds, since ball was thrown.
a) How high is ball 3 seconds after thrown?
b) How high was ball above ground at moment it was released?

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

4

step-by-step explanation:

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2