Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree: 4; zeros: 3i and -5i
A. f(x) = x4 - 3x3 + 34x2 + 225
B. f(x) = x4 - 5x2 + 225
C. f(x) = x4 + 34x2 -5x + 225
D. f(x) = x4 + 34x2 + 225
Answer: D
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Solve the problem.A cab company charges a base rate of $1.50 plus 15 cents per minute. Let C(x) be the cost in dollars of using the cab for x minutes. Write a cost function.
A. C(x) = 1.50x + 0.15 B. C(x) = 0.15x + 1.50 C. C(x) = 1.50x - 0.15 D. C(x) = 0.15x - 1.50
Evaluate the expression.
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Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 4(x + 5) = 4x + 20
A. {40} B. {x|x is a real number} C. ? D. {0}