Use the discriminant to determine the number of real solutions.7x2 = 4x - 2
A. One real solution
B. Two real solutions
C. No real solutions
Answer: C
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Solve the problem.The tuning frequency f of an electronic tuner is inversely proportional to the square root of the capacitance C in the circuit. If 
for 
find how fast f is changing at this frequency if 
A. -120 pF/s B. -47.9 pF/s C. 364 pF/s D. -95.8 pF/s
Simplify the expression.
+ 
A. 
B. 
C. 
D. 3
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
A die is rolled twice. Write the indicated event in set notation.The sum of the rolls is either 3 or 4.
A. {(1, 2), (2, 1), (1, 3), (3, 1), (2, 2)} B. {(1, 2), (2, 2)} C. {(1, 2), (1, 3), (2, 2)} D. {(2, 1), (3, 1), (2, 2)}