Which scatter plot shows a positive linear association ?

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

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.

Write 5 in the form of a/b using integers to show it as a rational number