Find the x-intercepts.y = x2 + 5x + 12
A. No x-intercepts
B. (2.4, 0)
C. (0, -5)
D. (-5, 0)
Answer: A
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A sample statistic and margin of error are given. Find the confidence interval likely to contain the population parameter of interest and answer the question.In a survey conducted in a certain city it was found that 5.3% of men and 6.1% of women were unemployed. The margin of error for each report was 0.6 percentage points. Use each sample statistic to find a confidence interval. Can we conclude that the unemployment rate is higher amongst women than amongst men?
A. men: 4.7% to 5.3% women: 6.1% to 6.7% yes B. men: 4.7% to 5.9% women: 5.5% to 6.7% no C. men: 5.3% to 5.9% women: 5.5% to 6.1% no D. men: 5% to 5.6% women: 5.8% to 6.4% yes
Solve.
x - 8 = 13
A. x = 21.67 B. x = 8.33 C. x = 35 D. x = 48.33
Factor the trinomial, or state that the trinomial is prime.x2 + 3x - 54
A. (x - 9)(x + 1) B. (x + 9)(x - 6) C. (x - 9)(x - 6) D. prime
Simplify the expression. Use the distributive property to remove any parentheses.-2(9x + 5)
A. -28x B. -18x + 5 C. 7x + 3 D. -18x - 10