In May, Charlie wants to spend more money
on entertainment and
decides to use all of
his clothing budget for
entertainment.
Approximately what
percent of the total
budget is spent on
entertainment for
May?

Carla is on the right track because she is finding the slopes of consecutive sides to check for right angles.

Step-by-step explanation:

The slope of the line passing through the points and is

Find the slope of the line passing through the points C(2, 3) and D(1, 2):

Find the slope of the line passing through the points D(1,2) and E(4,1):

These slopes have the product

so angle D is not a right angle.

Carla is on the right track because she is finding the slopes of consecutive sides to check for right angles.