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20. Multiply: 2x (3x^2 - 5x - 3)

21. Divide: 14m^1 - 28m^8 ÷ 7m/ 7m

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

How do i take any fraction and make it into a decimal or percentage?

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places