Use an integer to express the number.A football team gained 27 yards on one play.
A. -27
B. 27
Answer: B
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Solve the system of equations algebraically for real values of x and y.
?
?
Please enter your answer as ordered pairs in the form 
, 
, .... The pairs must be separated by commas.
What will be an ideal response?
Multiply the polynomials. Express the answer as a single polynomial in standard form.(5x + 4)3
A. 25x6 + 20x3 + 4096 B. 125x3 + 300x2 + 300x + 64 C. 25x2 + 40x + 16 D. 125x3 + 300x2 + 240x + 64
Write the interval in set-builder notation and graph the set on a number line.[9, ?)
A. {x|x ? 9}
B. {x|x ? 9}
C. {x|x > 9}
D. {x|x < 9}
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400