The answer would be 28 and 1/4.
Slope intercept form is y = mx + b
7 tickets for $5 means that 1 ticket costs 5/7 dollars
So for part a, the slope intercept form would be:

where x is the number of tickets, and y is the price.
For part b)
The slope intercept form is:

where x is the number of all you can ride wristbands you buy, and y is the total price.
12/16=3/4, 3/4*8=6. Therefore Caitlin still has 6 km to go, So d=6
How is this a math question
hi the answer is I have no clue sorryyyy