Simplify the rational expression.
A. 9x2 + xy + 49y2
B. 3x2 + xy + 7y2
C. 9x2 - 21xy + 49y2
D. 9x2 + 21xy + 49y2
Answer: C
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Provide an appropriate response.Which one is correct, and which one is wrong? Give reasons for your answers.(a) src="https://sciemce.com/media/4/ppg__tttt0610190958__f1q4g7.jpg" style="vertical-align: -21.0px;" /> = 
= 
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(b) 
= 0
What will be an ideal response?
Draw the angle in standard position and state the quadrant in which the terminal side of the angle lies or the axis on which the terminal side of the angle lies.-150°
A. Quadrant III
B. Quadrant II
C. Quadrant III
D. Quadrant II
Find the present value. Round to the nearest cent.To get $2000 after 7 years at 4% compounded semiannually
A. $1515.75 B. $1519.84 C. $1546.07 D. $484.25
Write the standard form of the equation of the circle with radius r and center (h, k).r = 7; (h, k) = (0, 4)
A. x2 + (y + 4)2 = 7 B. x2 + (y - 4)2 = 49 C. (x - 4)2 + y2 = 49 D. (x + 4)2 + y2 = 49