Find the measure of each missing angle. (not just the "? " angle)

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

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?

What is the maximum of the sinusoidal function