C. 7 hours because to find the hourly pay do 21 divided by 3 which is equal to 7
Answer:
The expected value of playing the game is $0.75.
Step-by-step explanation:
The expected value of a random variable is the weighted average of the random variable.
The formula to compute the expected value of a random variable <em>X</em> is:

The random variable <em>X</em> in this case can be defined as the amount won in playing the game.
The probability distribution of <em>X</em> is as follows:
Number on spinner: 1 2 3 4 5 6
Amount earned (<em>X</em>): $1 $4 $7 $10 -$8.75 -$8.75
Probability: 1/6 1/6 1/6 1/6 1/6 1/6
Compute the expected value of <em>X</em> as follows:





Thus, the expected value of playing the game is $0.75.
Hello,
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Answer B
(x^3-2^3=(x-2)(x²+2x+4)
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This is true. If you count the number of lbs, you get 16 and if you count the number of dollars in the same length, you get $4.
Answer:
B. 
in decimal form, it would be 0.015625