Tickets to a concert are available online for $20 each, plus a one-time handling fee of $1.75. The total cost is a function of the number of tickets bought. What function rule models the cost of the concert tickets ( t )? Evaluate the function for 6 tickets.
a. 20t 1.75; $25.25
b. 1.75t 20; $25.25
c. 20t 1.75; $61.75
d. 1.75t 20; $61.75