The amount an appliance repairman charges for each job is represented by the function t + 50h + 35, where h represents the number of hours he spent on the job and t represents the total amount he charges in dollars for the job. The repairman plans to change the amount he charges for each job. The amount he plans to charge is represented by the function t + 50h + 45. What will be the effect of this change on the amount he charges for each job?
a) The total amount he charges for each job will increase by $10.
b) The total amount he charges for each job will decrease by $10.
c) The amount he charges per hour will increase by $10.
d) The amount he charges per hour will decrease by $10.