AnswersMathematics IIIExponential and Logarithmic Functions

Practice Test Answers

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Which of the following shows the graph of y is equal to the natural log of open paren negative 2 x close paren ?

A
Image with description On a coordinate plane the x axis lists from negative 5 to 5 by 1 and y axis lists from negative 5 to 5 by 1. There is a curved graph that starts from the first quadrant, crosses the x axis at (0 point 5 comma 0), decreases with x value. From here it approaches y axis in the fourth quadrant.
B
Image with description On a coordinate plane the x axis lists from negative 5 to 5 by 1 and y axis lists from negative 5 to 5 by 1. There is a curved graph that starts from the second quadrant, crosses the x axis at (0 point 5 comma 0), decreases with the increased value of x. From here it approaches y axis in the third quadrant.
C
Image with description On a coordinate plane the x axis lists from negative 5 to 5 by 1 and y axis lists from negative 5 to 5 by 1. There is a curved graph that starts from the first quadrant, crosses the x axis at (4 comma 0), decreases with x value. From here it approaches y axis in the fourth quadrant.
D
Image with description On a coordinate plane the x axis lists from negative 5 to 5 by 1 and y axis lists from negative 5 to 5 by 1. There is a curved graph that starts from the second quadrant, crosses the x axis at (negative 4 comma 0), decreases with the increased value of x. From here it approaches y axis in the third quadrant.
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Which fraction represents the decimal 0 point 8 8 8 8 dot dot dot ?

A
9 eighths
B
8 ninths
C
80 over 99
D
the fraction with numerator 1 comma 111 and denominator 1 comma 250

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