Answer:
y = 60 when x = 12
Step-by-step explanation:
Direct variation is
y = kx
15 = k3
Divide by 3
15/3 = k
5 =k
y = 5x
Let x = 12
y = 5*12
y = 60
By addition of the ratio, 5/8 people are adults
144 * 5/8 = 90
Answer:
james has had the plant 21 days
Step-by-step explanation:
5 +3d= 68
5+3d-5= 68-5
3d= 63
3d/3=63/3
d=21
