Answer:
4th option
Step-by-step explanation:
Given
-
← expand denominator using FOIL
=
- 
Since the denominators are common, then subtract the numerators
= 
Can you support your question by uploading a drawing?
Answer:$210
Step-by-step explanation: 7% of $1000 = $70 x 3yrs =$210
Either:
- He didn't measure from the end of the first paper strip to the end of the last.
- The paper strips were of different sizes