Practice Test

Question 1

An exponential function f of x is reflected across the x -axis to create the function g of x Which is a true statement regarding f of x and g of x ?

Revolt · Accepted Answer

The two functions have opposite output values of each other for any given input value.

Question 2

Which is equivalent to 16 raised to the 3 fourths x power ?

Revolt · Accepted Answer

4th root of 16 raised to the 3 x power

Question 3

What are the domain and range of f of x is equal to 1 sixth to the x th power plus 2 ?

Revolt · Accepted Answer

domain: start set x such that x is a real number end set ; range: start set y such that y is greater than 2 end set

Question 4

Which is the graph of g of x is equal to 2 thirds to the x th power minus 2 ?

Revolt · Accepted Answer

Image with description A coordinate plane displays the x-axis labeled from negative 4 to 4 in increments of 2 and the y-axis labeled from negative 4 to 4 in increments of 2. A decreasing curve passes through the labeled point 0 comma negative 1 and continues from the upper left toward the lower right. The graph passes through approximately the points negative 4 comma 3, negative 2 comma 0.5, 2 comma negative 1.5, and 4 comma negative 2.

Question 5

Which function represents exponential growth?

Revolt · Accepted Answer

f of x is equal to 3 to the x th power

Question 6

Which function represents exponential decay?

Revolt · Accepted Answer

f of x is equal to 4 times 2 thirds to the x th power

Question 7

Which is the initial value that shrinks an exponential growth function by 50 percent ?

Revolt · Accepted Answer

1 half

Question 8

The function f of x is equal to 8 times 1 fourth to the x th power is reflected across the y -axis to create g of x Which table of values could be used to graph g of x ?

Revolt · Accepted Answer

Table with 3 columns and 6 rows.Row 1: Column 1, 'x'; Column 2, 'f of x'; Column 3, 'g of x' Row 2: Column 1, 'negative 2'; Column 2, '128'; Column 3, '1 half' Row 3: Column 1, 'negative 1'; Column 2, '32'; Column 3, '2' Row 4: Column 1, '0'; Column 2, '8'; Column 3, '8' Row 5: Column 1, '1'; Column 2, '2'; Column 3, '32' Row 6: Column 1, '2'; Column 2, '1 half'; Column 3, '128'

Question 9

Which value of a in the exponential function would cause the function to shrink? f of x is equal to a times 3 halves to the x th power

Revolt · Accepted Answer

4 fifths

Question 10

Pherris is graphing the function f of x is equal to 2 times 3 to the x th power He begins with the point 1 comma 6 Which could be the next point on his graph?

Revolt · Accepted Answer

2 comma 18

Practice Test Answers

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