Marisa runs a 400 meter race in 80 seconds. What is Marishas average speed for the race?

Geometry answer picture question pls . reason and statements

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

Mr.zimmerman invested $25,000 in an account that draws 1.4 interest, compouneded annually. what is the total value of the account after 15 years