Before the advance-purchase deadline, the cost of attending a particular event is $90. after that, the price goes up to $117. what is the percent of increase in the cost of the event?

The percent increase in the advance-purchase deadline is 30% because if you divide $90 by 10 you get 9 and multiply that by 3 and you will get an 30% increase

word problem: 90 ÷ 10=  9 x 13 =1 17

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant