Penny reads 13 pages in 1/4 hour. What is the unit rate for pages per hour? For hours per page?

52 pages per 1 hour

Step-by-step explanation:

If Penny reads 13 pages in 1/4 of an hour you need to multiply 13 by 4 to see how many pages she will read in 1 hour.

52 pages an hour

Step-by-step explanation:

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0