Today everything at a store is on sale the store offers a 20% discount the discounted price of the hat is $18 what is the regular price (The answer is not 21.6) The answer is 22.5 But I don’t know how to get there

I’m really confused and need your assist me with this question i’ve never been taught

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

Pleasse me i need an answer. give me the correct answer. answer if you know it ! the club will base its decision about whether to increase the budget for the indoor rock climbing facility on the analysis of its usage. the decision to increase the budget will depend on whether members are using the indoor facility at least two times a week. use the best measure of center for both data sets to determine whether the club should increase the budget. assume there are four weeks in a month. if you think the data is inconclusive, explain why.