Which of the following demonstrates the commutative property of multiplication? a. 2(6a − 3) = (6a − 3) ⋅ 2 b. 2(6a − 3) = 12a − 6 c. 12a − 6 = (6a − 3) ⋅ 2 d. (2 ⋅ 6a) − 3 = 2(6a − 3)

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?