3. Students in the 7th, 8th, and 9th grade were asked whether they prefer to write in pen or pencil. 40 students prefer to write in pen. 60 students prefer to write in pencil. Create values that could represent the number of students in the 7th, 8th, and 9th grade that responded to the survey. (Three answers).

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.