What do you solve first in an equation without parentheses?

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

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.