Find an equation of a polynomial function of least degree having the given complex zeros, intercepts, and graph.f(x) has complex zero i
A. f(x) = (x + 3)(x2 + 1)
B. f(x) = (x - 3)(x2 + 1)
C. f(x) = (x + 3)(x - 3)
D. f(x) = (x - 3)(x + 1)(x - 1)
Answer: B
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Use an identity to write the expression as a single trigonometric function or as a single number.
A. cos 33° B. cot 33° C. tan 33° D. sin 33°
Multiply or divide as indicated.
A. -6i B. -6 C. 6i D. 6
Perform the indicated operation. Write the answer in scientific notation.(8.64 × 10-4)(8.43 × 10-4)
A. 7.28 × 10-7 B. 7.28 × 1016 C. 7.3 × 10-7 D. 7.3 × 1016
Suppose that the average adult in the United States will work x number of days (rounded to the nearest day) to earn enough to pay for all of the household's leisure activities in that year. This number can be calculated by multiplying the average percent of household income spent on leisure activities by 365 (the number of days in a year). The bar graph shows the percent of income spent in various countries of the world. Use the graph to answer the question.
In which country is the lowest percent of income spent on leisure activities? What percent is this?
A. China; 5.3% B. USA; 71.5% C. China; 94.7% D. Australia; 8.9%