Find the equation of the tangent line to the curve when x has the given value.f(x) = x2 + 5x; x = 4
A. y = 13x - 16
B. y = - 
+ 
C. y = 
+ 
D. y = -39x - 80
Answer: A
Mathematics
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the circle with the given center and radius.Center at (10, 0); radius = 7
A. (x - 10)2 + y2 = 49 B. x2 + (y - 10)2 = 7 C. (x + 10)2 + y2 = 49 D. x2 + (y + 10)2 = 7
Mathematics
Evaluate the square root and approximate to two decimal places if necessary.
A. 40 B. 20 C. 10 D. 400
Mathematics
List all numbers from the given set B that are members of the given Real Number subset.B = {4, 
, 0, 
, 
, -0.
, 0.53, -23} Real numbers
A. 4, 
, 0, 
, 
, -0.
, 0.53, -23
B. 4, 
, 0, 
, 
, 0.53
C. 4, 0, 
, -0.
, 0.53, -23
D. 4, 
, 
, 
, -0.
, 0.53, -23
Mathematics