Ch 9 Test

• The x-intercept is at (2, 0)

• The graph has a vertical asymptote of x=1.

• The graph has a horizontal asymptote of x=1.

• The domain of the graph is (1,∞).

• Domain: {x|x∈R}Range: {y/y∈R}

• Domain: {x|x≥0} Range: {y|y≥0}

• Domain: {x|x≥7} Range: {y|y≥0}

• Domain: {x|x≥0}Range: {y|y≥7}

• x= 1/8

• x = 8

• No

• Yes

• Cannot be determined

• It all depends on the values of x.

Maria just graduated with an Associates degree and is working as a secretary in a firm earning $9.75 an hour. Her contract stipulates that she will get an annual raise of 6% until she reaches the rate of $15.50 an hour. How long would it take for Maria to earn $15.50 an hour?

• 15 years

• 6 years

• 8 years

• 10 years

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The key features of a logarithmic function, f(x), are shown in the table.

Key Feature Description

Domain (−6,∞)

Range All Real Numbers

x-intercept(s) (−5,0)

y-intercept(s) (0,1)

Increasing (−6,∞)

Positive (−5,∞)

Vertical Asymptote x=−6

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• 
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Mr. and Mrs. Sharp are saving for their child’s college education. They originally invest $5,000 in an account that pays 3.5% interest compounded continuously. When will their investment be doubled the original amount ?

• 17 yrs

• 20 yrs

• 10 yrs

• 8 yrs