A large jar of sand has 94,100,000,000 grains of sand. Write the number of grains of sand in scientific notation.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Simplify the expression. -2/5(10+15m-20n)

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?