Find only the rational zeros.f(x) = x5 - 3x4 - 3x3 + 9x2 - 4x + 12
A. 3, 2, 3
B. 3, 2, -2
C. -3, 2, -2
D. No rational zeros
Answer: B
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The centroid of a triangle lies at the intersection of the triangle's medians, because it lies one-third of the way from each side towards the opposite vertex. Use this result to find the centroid of the triangle whose vertices appear as following.(0, 0), (2, 0), 
A. 
B. 
C. 
D. 
Simplify.30 ÷ 1
A. 0 B. 30 C. 1 D. undefined
Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 8x - 5 = 0
A. {-4 ± 2
}
B. {4 ± 
}
C. {-1 ± 
}
D. {-4 ± 
}
Solve the problem.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). (i) Use a graphing calculator to fit a linear sequence regression function an = an + b to the data, where n is the cost of advertising (in thousands of dollars) and an is number of products sold (in thousands). (ii) Use this function to estimate the number of products sold if the cost of advertising is $14,000.
A. (i) an = 3.02n + 55.8; (ii) 101.56 thousand products B. (i) an = 5.79n + 94.3; (ii) 39,115.8 products C. (i) an = 2.79n + 55.8; (ii) 94.86 thousand products D. (i) an = 2.73n + 34.8; (ii) 91.86 thousand products