we know that
The simple interest formula is equal to

where
I is the simple interest
P is the principal ( the amount borrowed or deposited)
r is the interest rate
t is the time
in this problem we have

Substitute the values in the formula above


therefore
<u>the answer is</u>
The amount of interest earned is equal to 
Answer:
first one is b
second is c
Step-by-step explanation: hope this helps!!
Answer:
This term would not change at all when combining like terms.
Step-by-step explanation:
Because the first term has a variable and the second does not, they can not be combined. Therefore, there is not change to this assignment
(5(2x))^3
Use the property of exponents:
(5^3)*(2x)^3
Simplify the exponents:
125*8*x^3
Simplify the numbers and multiply the integers:
1000*x^3
Hope this helps :)