Express the number in scientific notation.0.000742
A. 7.42 × 10-5
B. 7.42 × 104
C. 7.42 × 10-3
D. 7.42 × 10-4
Answer: D
Mathematics
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A. 
B. - 
C. -1
D. - 
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Solve the problem using your calculator.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). What is the correlation coefficient?
A. 0.708 B. -0.071 C. 0.235 D. 0.246
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List the x- and y-intercepts, and graph the function.f(x) = 
A. No x-intercepts, y-intercept: 
;
B. No x-intercepts, y-intercept: 
;
C. No x-intercepts, y-intercept: 
;
D. No x-intercepts, y-intercept: 
;
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Determine the number of solutions to the given system without graphing.
A. no solution B. one solution C. infinite number of solutions
Mathematics