Marcus estimates that 230 people will attend the choir concert. there was an actual total of 300 people who attended the choir concert. what is the percent error

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.

Which number line correctly shows 0.8 + 0.3?