How to solve this equation -5 (3s-9)=23 i have to round this answer to the hundredths

Abaker has 5 1/4 pies in her shop. she cut the pies in pieces that are each 1/8 of a whole pie. how many pieces of pie does she have?

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x