Final answer:
The landscaping company uses the linear equation t = 10h + 25 to calculate the total charge for h hours of service, where t is the total charge and h is the number of hours. For 4 hours of service, they charge $65.
Step-by-step explanation:
The landscaping company charges a one-time fee plus an hourly rate for their services. For 1 hour of service at an hourly rate of $10, the total charge is $35. This means that the one-time fee is $35 - $10 = $25. Therefore, the equation representing the total charge t for h hours of landscaping is t = 10h + 25. This equation includes a one-time fee of $25 and an hourly charge of $10.
To find out how much the landscaper charges for 4 hours of service, we simply plug in 4 for h in the equation:
t = 10(4) + 25
t = 40 + 25
t = $65.
So, the landscaping company charges $65 for 4 hours of service.