four glasses of milk and 2 snack bars have a total of 68 carbohydrates (carbs), and 2 glasses of milk and 3 snack bars have a total of 62 carbs. Determine how many carbs are in one glass of milk and in one snack bar.

One glass of milk = 10 carbs

One snack bar = 14 carbs

Step-by-step explanation:

Four glasses of milk and Two snack bars.

4 x 10 = 40

2 x 14 = 28

40 + 28 = 68

Two glasses of milk and Three snack bars.

2 x 10 = 20

3 x 14 = 42

20 + 42 = 62

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.