Give an appropriate answer.Find all points (x, y) at which the tangent plane to the graph 
is horizontal.
A. (4, -1, 42)
B. (4, 1, 66)
C. (-4, 1, -30)
D. (-4, -1, -22)
Answer: D
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Simplify, if possible.
? 
÷ 
A. 1
B. 
C. 
D. 
Find the interest and maturity value for the loan. Round to the nearest cent.$20,725 at 6.5% for 327 days (ordinary interest)
A. $1240.87; $21,965.87 B. $1203.19; $21,928.19 C. $1223.64; $21,948.64 D. $1210.57; $21,935.57
Find x so the distance between src="https://sciemce.com/media/3/ppg__cognero__Section_1.2_The_Rectangular_Coordinate_System__media__9e0aa80d-e1f5-4835-a4a9-a0581e61ecbe.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_3e87d917400f450a8863ea609" />.
and 
is
?
A. 
B. 
C. 
D. 
E. 
Find the exact value. Do not use a calculator.sec 
A. -
B. 
C. 
D. 