Luba walked 5 miles in 1 1/2 hours. How fast did she walk in miles per hour? A. 2/15 miles per hour
B. 9/10 miles per hour
C. 2 3/4 miles per hour
D. 3 1/3 miles per hour

Arandom high school question but a hard one

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x