Answer:
10%
Step-by-step explanation:
First, get the drop in value by deducting the price this year from last year's price.
Value decrease=$52.00-$46.80=$5.20
To express it as a percentage, we divide it by the original price which was $52.00 then multiply by 100 hence the percentage decrease will be

Therefore, the price decreases by 10%
The second answer choice.
Get rid of all common factors.
36/4 = 9
x^9/x^7 = x^2
y^4/y^3 = y