# math

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Adult tickets for a play cost \$19 and child tickets cost \$17. If there were 36 people at a performance and the theatre collected \$646 from ticket sales, how many children attended the play?

• math -

Let a = adults and c = children.

a + c = 36 total attendance, then
a = 36 - c

19a + 17c = \$646 total ticket sales

Substitute (36-c) for a in the second equation and solve for c.

I'll let you do the calculations.

• math -

C=19

• math -

Which expression shows the cost of one adult

admission ticket and 9 thrill ride tickets?

A \$15 + (9 × \$3)

B \$12 + (9 × \$3)

C \$15 + (9 + \$3)

D (\$15 × 9) + \$3

• math -

b

• math -

42

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