An appliance repairman charges $50 for service calls plus $25 per hour for labor. Write and solve an equation to determine how much he would charge for a 3.5 hour service call.

C = $137.50

Step-by-step explanation:

Okie dokie, so we already know he charges $50 just for a service call, plus 25 per hour, so let's say the total charge is C.

Now, let's make an equation:

C = 50 + 25(3.5)

Now, multiply 25 and 3.5 together:

C = 50 + 87.5

Now we just combine the like terms:

C = $137.5

Hope this helps :)

the square root of what number? if you add that, then someone will probably answer the question.