(-2 1/2) to the second power

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Jim had 15 minutes to do 5 laps around his school what would his time be

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.