Use a grapher to find the vertex, rounding to the nearest hundredth when necessary.f(x) = 5x2 - x + 4
A. (0.1, 4.05)
B. (0.1, 3.95)
C. (-0.1, 3.95)
D. (0.1, 4)
Answer: B
Mathematics
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Match the function to its graph.y = tan 
A. 
B. 
C. 
D. 
Mathematics
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.cot 390°
A. -
B. 
C. 
D. - 
Mathematics
Solve.The sum of a number and its reciprocal is -2. Find the number.
A. -1 B. 1 or -1 C. 2 D. 1
Mathematics
Find the center-radius form of the equation of the circle satisfying the given conditions.Center (-8, 0), radius 9
A. x2 + (y - 8)2 = 9 B. x2 + (y + 8)2 = 9 C. (x + 8)2 + y2 = 81 D. (x - 8)2 + y2 = 81
Mathematics