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: 7(-4-x) —> -28-7x. 7(4+x) —> 28+7x. -7(-4+x) —> 28-7x. -7(4-x) —> -28+7x
Step-by-step explanation:
Answer:
Length should be 15 cm and width should be 5 cm
Step-by-step explanation:
5 * 3 = 15
15+15+5+5=40
:)
Answer:
Just take the two zeros to 100
Step-by-step explanation: