Write the standard form of the equation of the circle described.Center (0, 6), r = 
A. (x + 6)2 + y2 = 121
B. x2 + (y + 6)2 = 11
C. x2 + (y - 6)2 = 11
D. (x - 6)2 + y2 = 121
Answer: C
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Solve the problem.In a probability space, which of the following statements is not true?
A. The probability of the sample space is always equal to 1. B. The impossible event always has probability equal to 0. C. All probabilities are between 0 and 1 (0 and 1 included). D. All outcomes are equally likely. E. All of these statements are true.
Solve the problem.It has been found that the less income people have, the more likely they are to report that their health is fair or poor. The function 
models the percentage of Americans reporting fair or poor health, f(x), in terms of annual income, x, in thousands of dollars. Find and interpret f(31).
A. f(31) ? 13.5; 13.5% of Americans earning $31 thousand annually report fair or poor health. B. f(31) ? 14.6; 14.6% of Americans earning $31 thousand annually report fair or poor health. C. f(31) ? $14.6; 31% of Americans earning $14.6 thousand annually report fair or poor health. D. f(31) ? 13.5; 31% of Americans earning $13.5 thousand annually report fair or poor health.
Solve the problem.Find the mass of a thin triangular plate bounded by the coordinate axes and the line 
if 
.
A. 
B. 
C. 
D. 
The curve x = 5- 10cos²t, y = tant(1 - 2cos²t) cross itself at some point  FIGURE 1.png)
. Find the equations of both tangent lines at that point.
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