Question

Complete the table. In the row with x as the input, write a rule as an algebraic expression for the output. Then complete the last rule of the table using the rule.
Input Output

Tickets Cost

2 80

7 280

9 360

x _____

10 _______


I am a bit confused on this. I believe that the difference is 40 but I don't know what to put between 9 and 10?

Answer 1

Would x be 9.5?

Answer 2

Would the answer next to x be 380?

Answer 3

tickets vs cost
2 ---- 80 >>>>> cost per ticket = 80/2 = 40
7 ---- 280 >>> cost per ticket = 280/7 = 40
9 --- 360 >>>> cost per ticket = 360/9 = 40
So it looks like the cost of a ticket is $40

then x tickets would cost 40x
and 10 tickets would cost 10(40) = $400

Answer 4

Hello Reiny yes this is what I figure $40 but what would be between 9 and 10 as X?

Answer 5

Since X is the number of tickets, X has to be a whole number.
So 9.5 tickets would not make any sense.
Why would you worry about "between" 9 and 10 tickets?