Final answer:
The total cost of the saxophone, clarinet, and trumpet for the school band is $559.20, calculated by summing the individual prices of each instrument.
Step-by-step explanation:
The total cost of the instruments purchased by the school band can be calculated by summing up the individual prices of the saxophone, the clarinet, and the trumpet.
- Saxophone: $249.75
- Clarinet: $169.95
- Trumpet: $139.50
To find the total cost, add these amounts together:
$249.75 + $169.95 + $139.50 = $559.20
Therefore, the total cost of the instruments for the school band is $559.20.