To determine which company the O’Donnells should choose, let's set up the cost equations for both Balloon Express and Balloon Mania:
-
Balloon Express:
- Cost per balloon: $2
- Delivery fee: $10
- Total cost \( E \) for 30 balloons can be calculated as: \[ E = 2 \times 30 + 10 \] \[ E = 60 + 10 = 70 \]
-
Balloon Mania:
- Cost per balloon: $1.50
- Delivery fee: $20
- Total cost \( M \) for 30 balloons can be calculated as: \[ M = 1.5 \times 30 + 20 \] \[ M = 45 + 20 = 65 \]
Now we can compare the total costs:
- Cost with Balloon Express: $70
- Cost with Balloon Mania: $65
To find the savings by choosing Balloon Mania over Balloon Express: \[ \text{Savings} = E - M = 70 - 65 = 5 \]
Thus, the O’Donnells should choose Balloon Mania, and they will save $5.
The correct response is: Balloon Mania; $5