Answer:
Part A = D
Part B = 5 and 50
Step-by-step explanation:
Part A:
area = 5*4x = 20x
so, 
Part B:
to leave it only by x, you divide both sides by 20
100/20 = 5, 1000/20 = 50
which 
Answer at very bottom of picture above
if explanation need comment
Answer:
65*h=c
Because if it's per hour c is dependent on the amount of hours.
Answer:
here you go:
Step-by-step explanation:
1:4/3
2:1.549
3:18.5
4:3/2
5:157/65
6:2.067
7:1/4
8:17/15
9;3/2
10;1/2