Well first to find out how much the cookies are on sale you do
\(2.80/7= 0.40\)
So on sale each cookie is 40 cents each, now to figure out the normal price add 75 cent to the sale price so:
\(0.40 + 0.75 = 1.15\)
So that gives us $1.15
So the normal price for the cookies is $1.15 and the sale price is $0.40 cents
