Derek collects quarters that have the names of the 50 U. S. states on them. He has collected 15 different state quarters in 2.25 months. At this rate, how long will it take him to collect all 50?

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week