Intermediate algebra word problems

Question

For a students first semester at college the college charges $105 per credit hour plus a one-time $50 omissions fee the cost see in dollars for the first semester is given by seeing equals 105H +50 where H is the number of credit hours taken. If a student is billed $1415 how many credit hours is she taken?

Answer 1

Plugging in the total cost into the equation, you get

 

Cost = 105H+50

1415 = 105H+50

 

You will then need to solve for H to get the total credit hours taken.  You do this by isolating H on one side of the equation by itself.  Subtracting 50 from both sides of the equation give:

 

1365=105H

 

Divide both sides by 50 results in

 

13 = H

The solution is 13 credit hours.