Write a word problem that can be solved by finding the numbers that have 4 as a factor

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 expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder