Find the center (h, k) and radius r of the circle with the given equation. x2 + y2 = 16
A. (h, k) = (0, 0); r = 4
B. (h, k) = (0, 0); r = 16
C. (h, k) = (4, 4); r = 16
D. (h, k) = (4, 4); r = 4
Answer: A
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Perform the indicated operation.
A. 5.0282 B. 502.82 C. 0.50282 D. 50.282
Find the function value.Find f(-x) when f(x) = -3x + 7.
A. -3x - 7 B. 3x - 7 C. 3x + 7 D. -x + 7
For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 
x4(x2 - 5)
A. 0, multiplicity 4, crosses x-axis;
, multiplicity 1, touches x-axis;
-
, multiplicity 1, touches x-axis
B. 0, multiplicity 4, crosses x-axis
C. 0, multiplicity 4, touches x-axis
D. 0, multiplicity 4, touches x-axis;
, multiplicity 1, crosses x-axis;
-
, multiplicity 1, crosses x-axis
Write the number in standard form.8.43 × 104
A. 8430 B. 84,300 C. 843,000 D. 337.2