Two cars got an oil change at the same auto shop. The shop charges customers for each quart of a fee for labor. The oil change for one car required 5 quarts of oil and cost 22.20. The oil change for the other car required 7 and cost . much is the labor fee and how much is each quart of oil?

The probability of drawing a heart from a standard deck of cards is .25. you record the card you draw and return the card before shuffling to ensure a binomial distribution. if you do this 20 times what is the probability that you will draw a heart 7 times? a. 0.888 b. 0.001 c. 0.112 d. 0.473