Hi there
The amount deposited at the beginning of each year So use the formula of the future value of annuity due
FVAD=pmt [(1+r)^(n)-1)÷r]×(1+r)
FvAD future value?
PMT payment per year 200
R interest rate 0.2
T time 3 years
FVAD=200×((((1+0.2)^(3)−1)÷(0.2))
×(1+0.2))=873.6...answer
Hope it helps
I would simply consider saying that the answer is:
B. .533
because 8, 9-10th graders watched and 7 didn’t