Find an equivalent equation in rectangular coordinates.r = 2(sin ? - cos ?)
A. x2 + y2 = 2y - 2x
B. 2x2 + 2y2 = y - x
C. 2x2 + 2y2 = x - y
D. x2 + y2 = 2x - 2y
Answer: A
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Write the percent as a decimal.70%
A. 0.7 B. 0.59 C. 0.07 D. 7
Factor the polynomial completely.- 639x2 + 63x3 + 648x
A. x(9x - 9)(7x - 8) B. prime C. 9x(x - 9)(7x - 8) D. 9x(x + 9)(7x + 8)
Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.-2i
A. 2(cos 90° + i sin 90°) B. 2(cos 0° + i sin 0°) C. 2(cos 270° + i sin 270°) D. 2(cos 180° + i sin 180°)
Solve the problem.The maximum afternoon temperature in Granderson is modeled by 
where t represents the maximum afternoon temperature in degrees Fahrenheit in month x, with 
representing January, 
representing February, and so on. Find the maximum afternoon temperature in June.
A. 88°F B. 36°F C. 87°F D. 92°F