What is the area of the triangle?

Opposite angles in a parrellelogram are

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)