The cost of a single ticket depends on the number of tickets, t, purchased in a group, as represented by the function C(t). C(t) = StartLayout Enlarged left-brace 1st row 1st column dollar-sign 18. 50 2nd column 1 less-than-or-equal-to t less-than 12 2nd row 1st column dollar-sign 16. 00 2nd column 12 less-than-or-equal-to t less-than 20 3rd row 1st column dollar-sign 14. 50 2nd column 20 less-than-or-equal-to t EndLayout What is the total cost for 20 tickets? $14. 50 $16. 00 $290. 00 $320. 0.