Answer:
y = 35 (aka the total cost)
Explanation:
The equation without the hours input would be
y = 2.50x + 5
2.50 for the hourly cost and 5 for the equipment
If you were to input 12 (hours) for x you could solve this equation
y = 2.50 (12) + 5
y = 30 + 5
y = 35