What is the removable discontinuity

Why is 4 laps in 10 minutes and 6 laps in 15 minutes proportional

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Use the graph to determine the range. which notations accurately represent the range? check all that apply. (–∞, 2) u (2, ∞) (–∞, –2) u (–2, ∞) {y|y ∈ r, y ≠ –2} {y|y ∈ r, y ≠ 2} y < 2 or y > 2 y < –2 or y > –2