Write the equation of the line of best fit using the slope-intercept formula y = mx + b. show all your work, including the points used to determine the slope and how the equation was determined.

Lin is shopping for a couch with her dad and heard him ask the salesperson “how much is your commission? ” the salesperson says that her commission is 5 1/2% of the selling price. a.how much commission will the salesperson earn by selling a couch for $495? b.how much money will the store get from the sale of the couch?

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?