Which are correct representations of the inequality 6x2 3 + 4(2x - 1)?

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

8.74 rounded to the nearest whole number

Which diagram shows lines that must be parallel lines cut by transversal?