Solve the equation.
= 19
A. {-180}
B. {90}
C. {180}
D. {360}
Answer: C
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Use the 68-95-99.7 rule to solve the problem.Scores on a test are normally distributed with a mean of 106 and a standard deviation of 20. What percentage of scores are greater than 126?
A. 68% B. 84% C. 16% D. 32%
Solve the problem.The formula P = 0.68x2 - 0.048x + 1 models the approximate population P, in thousands, for a species of fish in a local pond, x years after 1997. During what year will the population reach 33.984 thousand fish?
A. 2005 B. 2003 C. 2006 D. 2004
Provide an appropriate response.Show that f(x, y, z) = x5y5z3 is continuous at every point (x0, y0, z0).
What will be an ideal response?
Use the linear approximation (1 + x)k ? 1 + kx, as specified.Find an approximation for the function f(x) = 
for values of x near zero.
A. f(x) ? 1 + 2x B. f(x) ? 1 - 2x C. f(x) ? 2 - 2x D. f(x) ? 2 + 2x