Which data set could not be represented by the histogram?
a) {12, 12, 15, 9, 8, 17, 11, 16, 15}
b) {13, 10, 15, 9, 9, 18, 19, 14, 15}
c) {12, 17, 19, 9, 8, 17, 18, 14, 16}
d) {13, 10, 16, 9, 8, 17, 18, 14, 15}

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

In the picture below, line pq is parallel to line rs, and the lines are cut by a transversal, line tu. the transversal is not perpendicular to the parallel lines. note: figure is not drawn to scale. which of the following are congruent angles?

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?