Is it always, sometimes, or never true that a scatter plot that shows a positive association suggests that the relationship is proportional?

What is 1/2 x (6 x 4)+3 + 2 show your work

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6