Unit Test — Unit test

Question 1

Which of the following is true for f(x) = 5cos(x) +1?

Revolt · Accepted Answer

The range of the function is the set of real numbers .

Question 2

Which function has no horizontal asymptote?

Revolt · Accepted Answer

f (x) = StartFraction 2 x squared Over 3 x minus 1 EndFraction

Question 3

What is the horizontal asymptote of ?

Revolt · Accepted Answer

y = –2

Question 4

A scientist has 40 liters of a 50% acidic solution. She adds a 20% acidic solution to create a mixture that has been diluted to have 30% acidity. The graph models the percent of acidity in the final mixture. How many liters of the 20% acidic solution should be added to create the needed 30% acidity in the final mixture?

Revolt · Accepted Answer

80 liters

Question 5

What are the domain and range of ?

Revolt · Accepted Answer

domain: x > 0; range: all real numbers

Unit Test — Unit test Answers

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