Answer:
$29.70
Step-by-step explanation:
when she opened her account she opened it with $900.00 she will get 2.2% interest per year. she leaves it for 1 1/2 years. what you do it you multiply 900.00 x 2.2% that will give you $19.80 then you have to divide it by 2 and that will give you 9.90. then you add 9.90 + 19.80 = 29.70
900. x 2.2% = 19.80
19.80 divide by 2 = 9.90
9.90 + 19.80 $ 29.70