The function C(x) = 17.5x - 10 represents the cost (in dollars) of buying x tickets to the orchestra with a $10 coupon.a. How much cost to buy 10 tickets?b. How many tickets can you buy with $130?
Accepted Solution
A:
a. How much cost to buy 10 tickets? For this case what you must do is replace the value of x = 10 in the given equation. We have then: C (x) = 17.5x - 10 C (10) = 17.5 * (10) - 10 C (10) = 165 Answer: to buy 10 tickets cost: $ 165
b. How many tickets can you buy with $ 130? For this case we must make the substitution: C (x) = 130 We have then: C (x) = 17.5x - 10 130 = 17.5x - 10 Clearing x we have: 17.5x = 130 + 10 17.5x = 140 x = (140) / (17.5) x = 8 Answer: You can buy 8 tickets with $ 130