The costs of movie tickets are shown in the table. Type of Ticket Cost per Ticket
Child $6.50
Adult $8.50
Senior $5.50

Which equations represent the total cost, c, to buy 2 of each type of ticket? Choose all that apply.
c = $6.50 + $8.50 + $5.50
c = (2 × $6.50) + (2 × $8.50) + (2 × $5.50)
c = ($6.50 + $8.50 + $5.50) ÷ 3 × 2
c = 2 × $6.50 × $8.50 × $5.50
c = ($6.50 + $8.50 + $5.50) × 2