Question

write an equation to represent the problem. then solve the equation. 13. two years of local internet service costs $685, including the installation fee of $85. what is the monthly fee?

Explanation:

Step1: Define variables and set equation

Let $x$ = monthly fee. Total cost = installation fee + 24 months of service:
$$685 = 85 + 24x$$

Step2: Isolate the variable term

Subtract 85 from both sides:
$$685 - 85 = 24x$$
$$600 = 24x$$

Step3: Solve for monthly fee

Divide both sides by 24:
$$x = \frac{600}{24}$$

Answer:

The monthly fee is $\$25$.