Solve, using the substitution method, and check.
A. (6, 1)
B. (-3, 4)
C. (3, 4)
D. (2, 5)
E. (8, 9)
Answer: C
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Solve the problem.A pollster wants to minimize the effect the order of the questions has on a person's response to a survey. How many different surveys are required to cover all possible arrangements if there are 7 questions on the survey?
A. 7 B. 5040 C. 720 D. 49
For the given functions f and g, find the requested function and state its domain.f(x) = 9x + 1; g(x) = 6x + 3Find f ? g.
A. (f ? g)(x) = 54x2 + 33x + 3; all real numbers B. (f ? g)(x) = 54x2 + 3; {x|x ? 3} C. (f ? g)(x) = 15x2 + 33x + 4; all real numbers D. (f ? g)(x) = 54x2 + 9x + 3; {x|x ? 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. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Write as a decimal.0.075%
A. 0.00075 B. 0.000075 C. 7.5 D. 0.0075