Is 1/8 grader than or less than 2/5

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?