18 points dan invests £11000 into a savings account. the bank gives 3.9% compound interest for the first 3 years and 4.5% thereafter. how much will dan have after 7 years to the nearest pound?

1

14713.11

Step-by-step explanation:

first 3: a=11000(1+0.039)^3 = 12337,85

7th year= 12337.85(1+0.045)^4=14713.11

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)