255 km because 85 x 3 is 255
x=-26 is the final anwser :)
Answer:
C) The expected value is -$40, so the man should not buy the warranty.
Step-by-step explanation:
The total cost to the man is expected to be the total of the amount he pays for the warranty and any amounts he gets because he has the warranty ...
-$100 +600×0.10 +0×0.90 = -$40
The expected value of the warranty is -$40. Based on that alone, the man should decide not to buy it.
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<em>Comment on warranties</em>
The expected value of a warranty to the buyer is <em>always negative</em>. That is how warranty companies make their money. Clearly, <em>expected value</em> is not the only criterion that should be considered.
They are the same angle, so we can write an equation to resemble it.
2w - 5 = 95
Solution:
2w - 5 = 95
2w = 100
w = 50
Check:
2(50) - 5
100 - 5
95
Therefore, w = 50
Best of Luck!
Because you are not adding the x's .When you add the coefficients, the variable comes along with it.