Perform the operation and write the result in the standard form.(7 - 
)(2 + 
)
A. 80 + 65i
B. 4370 + 919i
C. -80 + 65i
D. 80 - 65i
Answer: A
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Express the given quantity in terms of sin x or cos x.sin (6? + x)
A. -sin x B. cos x + sin x C. cos x - sin x D. sin x
Solve the indicated equation analytically.Consider the formula T = 591 - 76 cos 2?, where ? is measured in degrees. To the nearest hundredth of a degree, what is the smallest positive value of ? for which the value of T will be 625?
A. 58.29° B. 116.58° C. 119.58° D. 55.29°
Write using radical notation. Then, simplify, if possible.(2165/3)1/5
A. 61/3 B. 1296 C. 216 D. 6
Use a graphing calculator to plot the data and find the quadratic function of best fit.The number of housing starts in one beachside community remained fairly level until 1992 and then began to increase. The following data shows the number of housing starts since 1992 (x = 1). Use a graphing calculator to plot a scatter diagram. What is the quadratic function of best fit?
A. H(x) = 3.268x2 + 30.494x + 168.982 B. H(x) = -3.268x2 + 30.494x - 168.982 C. H(x) = -3.268x2 + 30.494x + 168.982 D. H(x) = -3.268x2 - 30.494x + 168.982