Find the amplitude, period, or phase shift as specified.Find the amplitude of y = 5 cos (2x - ?).
A. -2
B. 10
C. 5
D. ?
Answer: C
Mathematics
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Express in scientific notation.855,000,000,000
A. 8.55 × 1011 B. 8.55 × 1010 C. 855 × 109 D. 8.55 × 1012
Mathematics
Change the decimal into a proper fraction or mixed number. Simplify if necessary. 1.01
A. 
B. 1
C. 
D. 
Mathematics
Provide an appropriate response.A rectangular desktop is 30 inches by 23 inches. Dick decides to enlarge the length and width by the same amount to make a new area of 1320 in2. What will be the dimensions of the new desktop?
A. 40 inches by 33 inches B. 36 inches by 29 inches C. 8 inches by 165 inches D. 44 inches by 30 inches
Mathematics
Solve for x using an equivalent exponential expression.The length of a rectangle is 93 in. and the width is 78 in. Find its perimeter.
A. 342 in. B. 264 in. C. 7,254 in. D. 171 in.
Mathematics