17 which equation demonstrates the distributive property

a) 81 + 18 = 99

b) 81 x 18 = 18 x 81

c) 81 + 18 = 9(9 + 2)

d) (9 + 2)9 = 9(9 + 2)

it is given that 2(3 + x) = 6 + 2x. this is an example of the property
a) associative

b) commutative

c) distributive

d) identity

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?

Can someone explain to me how to do

Afarmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. each bag of soil covers 20 square yards. how many bags should the farmer purchase? (4 points) 1 bag 2 bags 3 bags 4 bags