I presume you're talking about number 3?
Solution
I = prt (I being the interest)
I =

I = 1,250$
Answer:
B , i believe
Step-by-step explanation:
Four multiplied by a number shown as q
Since the equation is already factored set each factor equal to zero and solve.
x - 1 = 0
Add 1 to both sides
x = 1
5x - 4 = 0
Add 4 to both sides
5x = 4
Divide both sides by 5
x = 4/5