It takes one student 10 hours to wash all of the cars at a school car wash. if 4 students wash all the cars, how many hours will each person spend washing cars? (assume that all students wash cars at the same rate.)

a. 40 hours
b. 5 hours
c. 0.4 hours
d. 3.5 hours

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?