Simplify 3(5a + b) + 4(a + 2b) *
9a + 5b
19a + 3b
19a +11b
2a +9b

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

Find the area of the regular hexagon if a side is 20 cm.