Answer:
c) He should add between 1 cup and 2 cups of dirt.
Step-by-step explanation:
ration of dirt to peat moss:
⇒ 8 parts dirt : 3 parts peat moss
⇒ x cups dirt : 1 cup peat moss
to find the value of dirt, take the ratio and turn it into a fraction
⇒ 8 : 3 = [tex]\frac{8}{3}[/tex]
⇒ x : 1 = [tex]\frac{x}{1}[/tex]
⇒ [tex]\frac{8}{3}[/tex] = [tex]\frac{x}{1}[/tex]
now, we multiply 1 on both sides to isolate x
⇒ [tex]\frac{8}{3}[/tex] x 1 = [tex]\frac{x}{1}[/tex] x 1
⇒ 2.67 = x
⇒ 2 cups of dirt
