Sianna bought 3 pens, 4 notebooks, and a calculator. The calculator cost 25 dollars 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 dollars ?
Answer
A
50 minus open paren 3 x plus 4 y plus 25 close paren
B
3 x plus 4 y plus 25
C
3 x plus 4 y plus 25 plus 50
D
50 minus open paren 3 x plus 4 y close paren
Explanation
The 3 pens cost 3x dollars, and the 4 notebooks cost 4y dollars. Adding the $25 calculator gives a total cost of 3x + 4y + 25. Change from $50 is the amount paid minus the total cost, so the correct expression is 50 − (3x + 4y + 25), choice A.
AI-written and checked against the verified answer.