Store A: 12 oz bag of popcorn for $3.81. Store A: Cost per ounce of popcorn.
Round your answer to the hundredths place.
Store B: 3 oz bag of popcorn for $1.10.
Store B: Cost per ounce of popcorn.
Round your answer to the hundredths place.
Which store has the better buy? Type either "A" or "B"

Store A

$0.32

Store A explanation:

You divide the cost by the number of ounces, so 3.81 / 12, which equals 0.3175, which rounded to the hundredths place is $0.32

Store B

$0.37

Store B explanation:

You divide the cost by the number of ounces, so 1.10 / 3, which equals 0.3666667, which rounded to the hundredths place is $0.37.

Overall

A

Overall explanation:

The price per ounce at store A is less then the price per ounce at store B.

Hope this helps!!!

On the right side you can use the pythagorean identity 1 = sin^2 x + cos^2 x and substitute to both the top and the bottom 1's
= [sin^2x + 2 sinx cosx + cos^2x] / [2sin^2x-sin^2x-cos^2x]
by simplifying the top to a perfect square binomial youll get (also combine like terms)
= [sinx +cosx]^2 / [sin^2x-cos^2x]
seperate the bottom binomial
= [sinx +cosx]^2 / [(sinx + cosx)(sinx - cosx)] 
cancel one (sinx+cosx) from the top and bottom and your answer is 
= [sinx +cosx] / [sinx - cosx] which is equal to the left side