Answer:
 the answer is 160
Explanation:
take the interest percentage and divide by 100 ex:5.2%100=0.052
take the dollar amount and multiply interest decimal 
ex:$450*0.052=23.40
take the sum of dollar amount and interest decimal and multiply by # of years of interest 
ex:3 years *23.40=70.20 
and that is how i got that answer