Give the coordinates of the vertex and graph the equation in a window that includes the vertex.y = (x + 4)2
A. Vertex: (4, 0)
B. Vertex: (0, -4)
C. Vertex: (-4, 0)
D. Vertex: (0, 4)
Answer: C
Mathematics
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Solve the rational inequality.
+ 
? - 
A. [-4, -2) ? [1, 2) B. [-4, -2) ? (-2, 1] C. (-?, -4 ] ? (-2, 1] ? (2, ?) D. (-?, -2 ] ? [ 1, 2)
Mathematics
Find the equation of the tangent line at the given point on the curve.xy + x = 2; (1, 1)
A. y = 
x + 
B. y = - 
x + 
C. y = 2x - 1
D. y = -2x + 3
Mathematics
Find the reference angle of the given angle.440°
A. 80° B. 10° C. 170° D. 100°
Mathematics
Solve.A college student earned $5500 during summer vacation working as a waiter in a popular restaurant. The student invested part of the money at 
and the rest at 
If the student received a total of $413 in interest at the end of the year, how much was invested at 
A. $2750 B. $2700 C. $2800 D. $785
Mathematics