The function C(x)=17.5x−10 represents the cost (in dollars) of buying x tickets to the orchestra with a $10 coupon.

Question

The function C(x)=17.5x−10�(�)=17.5�−10 represents the cost (in dollars) of buying x� tickets to the orchestra with a $10 coupon.

a. How much does it cost to buy 5 tickets?

It costs ___ to buy 5 tickets.

b. How many tickets can you buy with $130?

You can buy__tickets.

Answer 1

a) Substitute x=5 in the function and get the answer.

b) Substitute C(x) = 130 and get the value of 'x'. (Note: No. of tickets has to be an integer)

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