Select the functions that have identical graphs.(i) y = sin x(ii) y = cos 
(iii) y = cos x
A. i and ii
B. ii and iii
C. i, ii and iii
D. i and iii
Answer: A
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Find the domain of the function.f(x) = 
A. (-?, 7) ? (7, ?)
B. 
? 
? (7, ?)
C. (-?, -7) ? 
? 
D. 
? 
Solve the problem.Use the mathematical model for power gain, G = log 
10, where P0 is the output power in watts and Pi is the input power in watts. Determine the power gain G, in decibels, for an amplifier with an output P0 of 27 watts and an input Pi of 1.1 watts. Round to five decimal places if necessary.
A. 14.133 dB B. 14.89971 dB C. 14.72756 dB D. 13.89971 dB
Solve the problem.What is the probability that in a group of seven people two or more of them have the same birth month? (Assume that each month is equally likely.)
What will be an ideal response?
Write standard notation for the number in the sentence.The distance between two stars is four trillion, three hundred seventeen billion, nine hundred eighty-eight million miles.
A. 4,317,988,000,000,000 B. 4,317,988,000 C. 4,317,988,000,000 D. 4,317,988