Question

Sianna bought 3 pens, 4 notebooks, and a calculator. The calculator cost $25. If x represents the cost of each pen and y represents the cost of each notebook, which expression represents the amount of change Sianna should receive from $50?

3x + 4y +25

50 – (3x + 4y)
50 – (3x + 4y + 25)
3x + 4y + 25 + 50

Answer 1

C

Explanation:

Answer 2

50 – (3x + 4y + 25)

Explanation:

To see how much change she is gonna receive we need to find how much she spent on the items and add them all up:

The calculator was $25

The price of pens and notebooks are unknown so they are represented with x and y respectively.

With given information we can write the following equation to see the change she will receive:

50 – (3x + 4y + 25)