Linda is building steps for her porch. What is the volume of the first step? Answer quick please!

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

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )