Solve the inequality algebraically. Express the solution in interval notation.
? 0
A. [-6, 0) ? (0, 6]
B. (-?, -6] ? [6, ?)
C. [-6, 0) ? [6, ?)
D. (-?, -6] ? (0, 6]
Answer: D
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Provide an appropriate response.If you graphed x > 6, would you use a parenthesis or a square bracket? Explain why.
What will be an ideal response?
Solve the problem.A retailer knows that n games can be sold in a month at a price of 
dollars per game. Assume that he buys each game for 
and sells every one that he buys. If he wishes to make a profit of at least 
per month on sales of this game, how many games must he sell each month?
A. He must sell 30 or fewer games. B. He must sell between 25 and 40 games, inclusive. C. He must sell between 30 and 50 games, inclusive. D. He must sell between 30 and 80 games, inclusive.
Write the expression in the standard form a + bi.
A. -1 + 2i B. -1 - 2i C. 1 + 2i D. -1 + 5i
The following data, compiled by the admissions office at Faber College during the past 5 years, relate the number of college brochures and follow-up letters (x) sent to a preselected list of high school juniors who had taken the PSAT and the number of completed applications (y) received from these students (both measured in units of 1,000). x44.555.56y0.50.60.80.91.2? Determine the equation of the least-squares line for these data. Use the result obtained to predict the number of completed applications that might be expected if 6,800 brochures and follow-up letters are sent out during the next year. ?
A. 
; 1,412 applications
B. 
; 1,364 applications
C. 
; 1,387 applications
D. 
; 1,378 applications