isaac buys milk to make milkshakes for his friends. he buys 2 quarts of milk, 3 pints and 1/2 gallon of milk. How many cups of milk does he buy altogether?

9

Step-by-step explanation:

There is only 1 cup in a quart and 8 cups in a half gallon.

the answer to the question is a  

it has the same slope and the same y-intercept.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.