Answer:
Marsha earned interest = $850
Step-by-step explanation:
Amount deposited = $8500
Time = 2 years
Interest rate = 5% = 0.05
We need to find how much did Marsha earn in interest
The formula use is: 
Where I is interest earned, P is amount deposited, r is interest rate and t is time.
Putting values and finding interest.

So, Marsha earned interest = $850
Answer:
b = √a² + c² is incorrect and different from other 3
Step-by-step explanation:
The correct answer would be C., I believe, because you take the opposite of the coordinate and subtract one. Hope this was helpful! (:
the answer of the question is tens