He electrician charges $70 per hour plus a $35 service fee. the total cost, c, for t hours of work is given by the equation c = 70t + 35. if the total cost of the electrician's last job was $245, for how many hours did he work?

3 hours

Step-by-step explanation:

Since the service fee was $35, you can take that out of the total.

Now you are left with 210.

210 / 70 = 3

a and c

step-by-step explanation:

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