Plz help me with this one!

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section