Let the expression a ⊥ b be defined:

a ⊥ b = 5ab2

evaluate: -10 ⊥ -10
a) -5
b) -5000
c) 500
d) 5000
e) 5

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

Having a hard time understanding this question (see attachment).

Select the correct answer and solve for y