Help With Number 8 Please?

Help With Number 8 Please? class=

Verified Answer :

The answer is about 8.14 years :) 

Because,  
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Unit Rate =  \(\frac{I}{1300 * 0.0425 }\)  which is equal to → \(\frac{450}{1300 * . 0425}\) 

and that's how I found out that my answer is 8.14 years

bcalle

I = p r t First subtract 1750-1300 to find out how much interest was earned. 450=1300(.0425)t ; solve by multiplying 1300*.0425 then divide 450 by that number. You get approx 8.14 years.