Assessment (Domain and Range of Exponential Function)

The resulting y values after we have substituted in the possible x values is called _________.

• Range

• Domain

• Real Number

• Exponential Function

Which of the following does not exist

• zero on the numerator

• zero value under square root sign

• negative values on the denominator

• negative values under the square root sign

What is the domain and range of the function

 $\sqrt{x+7}\ \ ?$  

• Both the domain and the range is a set of all real numbers

• The domain is the set of all real numbers while the range is a set of real numbers greater than or equal to zero 

• The domain is the set of all real numbers greater than or equal to -7 while the range is a set of real numbers 

• The domain is the set of all real numbers less than or equal to -7 while the range is a set of real numbers greater than or equal to zero 

Which of the following statement is never true?

• For any given x value, the y value of y = 5^x is negative

• For any given x value, the y value of y = 5^x is positive

• The domain of an exponential function y = 5^x is positive numbers

• The domain of an exponential function y = 5^x is all real numbers

Which of the following statement is true about the function y = 3^x?

• The range of the function is the set of all real numbers

• The domain of the function is the set of all real numbers less than 3

• The range of the function is the set of all real numbers less than 3

• The domain of the function is the set of all real numbers

Refer to the graph: What is the domain of the exponential function f(x) = b^x?

• {x|xϵR, x≥0}

• {x|xϵR, x<0}

• {x|xϵR}

• {x|xϵR, x≤0}

Refer to the graph: What is the range of the exponential function f(x) = b^x?

• {y|yϵR, y≥0}

• {y|yϵR, y<0}

• {y|yϵR}

• {y|yϵR, y>0}

What is the domain of the exponential function f(x) = 3^x+1?

• {x|xϵR, x≥0}

• {x|xϵR, x>0}

• {x|xϵR}

• {x|xϵR, x≤0}

What is the range of the exponential function f(x) = 3^x+1?

• {y|yϵR, y≥0}

• {y|yϵR, y>0}

• {y|yϵR}

• {y|yϵR, y>0}

What is the domain of the exponential function

 $\left(\frac{1}{3}\right)^x\ ?$  

• {x|xϵR, x>0}

• {x|xϵR, x>1/3}

• {x|xϵR}

• {x|xϵR, x<1/3}