You should reinvest it. Compounding means that if you put $10 in and it gives you 110% of your investment, then you’ll receive $11. If you reinvest it and it gives 110% again, you’ll have $12.10. This will continue to accrue until you stop investing. If something doesn’t compound, you’ll only get the extra $1 over and over.
To find the answer make 25 equal to 6x+1
25=6x+1
25-1=24
24=6x
24/6=4
x=4
X=4
4/3
Remember if two lines are perpendicular, the product of their slopes are -1