Since simple interest doesn't involve compounding, the same amount gets added on every year. So, the equation for the simple interest received is

, where

is the total interest,

is the original deposit (or "principal"),

is the interest rate, and

is the time passed in years.
Plugging in our values, we can solve for the interest rate:



Answer:
38/3
Step-by-step explanation:
s is the midpoint of RT
so, RS = ST
5x + 7 = 8x -31
7+31 = 8x-5x
38= 3x
x= 38/3
Answer:
6x + 3y
Step-by-step explanation:
3(2x - y) + 6y ← distribute parenthesis by 3
= 6x - 3y + 6y ← collect like terms
= 6x + 3y