The floor of a concert hall is 3600 square feet. If the hall is 90 feet wide, how long is the concert hall

The product of two negative rational numbers is always zero sometimes zero never zero

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?