To solve this, you would divide the miles by the number of hours, 21 / 4
21 divided by 4 equals 5.25
Answer:
a) 100 metres
b) 10 metres
Step-by-step explanation:
Given: the approximate height, h, in meters, travelled by golf balls hit with two different clubs over a horizontal distance of d meters is given by the functions: 
To find: distances when the ball is at the same height when either of the clubs are used. Also, to find this height
Solution:
(a)

(b)
Put d = 100 in 

Answer:
(-1.5,0) (0,1)
Step-by-step explanation:
used desmos
The circle would triple because the radius is equal to its area