Unit 4B Quiz Review

It takes Kali eight minutes to sweep a porch. Shawna can sweep the same porch in 11 minutes. If they worked together how long would it take them?

• 4.63 minutes

• 8 minutes

• 5.34 hours

• 6 minutes

• It has one vertical asymptote

• It has two vertical asymptotes

• It has a hole at x = 2

• It has no vertical asymptotes

 Which of the following rational functions has the horizontal asymptote y = 2?

• f(x) = (2x² + 1) / x²

• f(x) = (2x³ + x) / (x² + 1)

• f(x) = (2x² + x) / x

• f(x) = (3x + 1) / (x - 3)

• 3

• -3

• 2

• -2

What determines the horizontal asymptote of a rational function?

• The degree of the numerator compared to the denominator

• The y-intercept

• The x-intercept

• The vertical asymptote

• 0

• 1

• 2

• 3

Working alone, it takes Stephanie seven hours to clean an attic. Shayna can clean the same attic in 12 hours. Find how long it would take them if they worked together.

• 4.42 hours

• 4 hours

• 3.24 hours

• 3 hours

• It has a vertical asymptote at x = 1 and a hole at x = -1

• It has a vertical asymptote at x = 1 and a hole at x = -1

• It has a hole at x = 1 and no vertical asymptote

• It has a vertical asymptote at x = 1 and no hole

• y = 3

• y = 0

• y = -3

• y = 2