Lee is selling spirit wear for a fundraiser. Hats cost $8 and shirts cost $12. Lee sold $272 worth of spirit wear in the first month. If Lee sold a total of
28 items, how many hats did Lee sell?

Please write an equation as well.

16 hats

Step-by-step explanation:

8h+12s=272

h+s=28

isolate s to get s=28-h

substitute that in for s and solve for h

you will get h=16 meaning 16 hats were sold

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