Question

Only #8 please I need help and let me know how you got it.. thank you:)

Answer 1

So investment is $140 and interest is 3% per yea
yo convert % to number 3/100 = .03
so for one year. $140 x .03 = $4.20/year
in two years you have $4.20+$4.20 =$ 8.40!

Answer is $8.40 or 2 years