Solve this real-world problem using a system of equations. The O’Donnells are having a birthday party for their son, and they plan to have a clown bring balloons to the party. Balloon Express charges $2 per balloon and $10 for delivery. Balloon Mania charges $1.50 per balloon and $20 for delivery. If the O’Donnells plan to order 30 balloons, which company should they choose, and how much will they save?(1 point)

Question

Solve this real-world problem using a system of equations. The O’Donnells are having a birthday party for their son, and they plan to have a clown bring balloons to the party. Balloon Express charges $2 per balloon and $10 for delivery. Balloon Mania charges $1.50 per balloon and $20 for delivery. If the O’Donnells plan to order 30 balloons, which company should they choose, and how much will they save?(1 point)
Responses

Balloon Mania; $25 
    Balloon Mania; $25 
    Balloon Express; $25
    Balloon Express; $25
    Balloon Express; $5 
    Balloon Express; $5 
    Balloon Mania; $5

GPT 3.5 · Answer

Let x be the number of balloons ordered and y be the total cost.

For Balloon Express:
2x + 10 = y

For Balloon Mania:
1.5x + 20 = y

Since the O'Donnells plan to order 30 balloons, x = 30.

For Balloon Express:
2(30) + 10 = 60 + 10 = 70

For Balloon Mania:
1.5(30) + 20 = 45 + 20 = 65

Therefore, the O'Donnells should choose Balloon Mania and they will save $5 by doing so.

So, the correct response is:
Balloon Mania; $5