Analyze the graph and write the equation of the function it represents in standard form f(x) = a(x - h)2 + k.
A. f(x) = -(x - 4)2
B. f(x) = -(x + 4)2
C. f(x) = (x + 4)2
D. f(x) = (x - 4)2
Answer: C
Mathematics
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Find the center (h, k) and radius r of the circle with the given equation. (x + 9)2 + y2 = 121
A. (h, k) = (-9, 0); r = 121 B. (h, k) = (-9, 0); r = 11 C. (h, k) = (0, -9); r = 121 D. (h, k) = (0, -9); r = 11
Mathematics
Find the indicated value.Let f(x) = 3x. f-1
A. -3
B. -4
C. 4
D. - 
Mathematics
Solve the problem.A rectangle that is x feet wide is inscribed in a circle of radius 14 feet. Express the area of the rectangle as a function of x.
A. A(x) = x
B. A(x) = x2
C. A(x) = x
D. A(x) = x(784 -x2)
Mathematics
Simplify the expression.-243-4/5
A. 81
B. 
C. - 
D. not a real number
Mathematics