Answer:
2 %
Step-by-step explanation:
Money borrowed, Principal, P = $ 700
time of investment, T = 3 years
Total interest paid, Simple interest, S.I = $ 42
Let the rate of interest is R.
Use the formula for simple interest.

By substituting the values

4200 = 2100 R
R = 2 %
Thus, the rate of interest is 2%.
Answer:
10x+2
Step-by-step explanation:
First we work on the paranthesis. We will times 5 and 2x to get 10x
and then we times 5 and 3/4 to get 3
So now we have 10x+3
-1.75
Next, we subtract 3
-1.75 which is 2
Lastly we look at the equation as a whole!
10x+2
Answer:
Step-by-step explanation: