B. Choose the letter of the best answer. Write the letter on the separate sheet of paper. 1. The set of all allowable values of the independent variable is called a. Range b. Domain c. Real Numbers d. Exponential Function 2. Which of the following does not exist? a. Zero value on the denominator b. Positive values under the square root sign c. Negative values on the denominator d. Zero value under the square root sign 3.What is the domain and range of the function: (x) =? a. The domain is all real numbers except -7 and the range is all real numbers except 0. b. The domain is all real numbers and the range is all real numbers except 0. c. The domain is all real numbers except -3 and the range is all real numbers. d. The domain and range are all real numbers. 3. x+7 4. Which of the following statement is always true? a. For any given x-value, the y-value of y = 2x is negative. b. For any given x-value, the y-value of y 2x is all real numbers. c. The domain of exponential function y = 2x is positive numbers. d. The domain of exponential function y 2x is all real numbers. 5. What is the domain of the function: (x) = 3x ? a. All negative numbers b. All positive numbers c. All real numbers except 0 d. All real numbers %3D

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