Find the value of x of the circle, and show the work of the equation:

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3

Yvaries directly as x. y =90 when x=6. find y when x=13