8x-3+19 What number does x stand for in this problem?? PLEASE ANSWER I WILL GIVE 50 POINTS!!!

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza