A family used 1, 600 cu. ft. of water one month, and 1,800 cu. ft. the next. Find (A) their total water bill and (B) the average water bill for the two months. Use the rates below for Company B.
If it helps, the answer is (A) $29.60 (B) $14.80 , but as to why, I need to see how to do it.

IDK

Step-by-step explanation:

Sorry Good Luck

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

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!