O Decide if each set of ordered pairs or equation represents a function. Explain.
A. {(-4, 1), (3, 2), (-2, -1), (5,0), (-4,-1)}
B.{(-6, 3), (-5, 3), (-4,3), (-3, 3), (-2,3)}
C. y = x2 – 10
D. x2 + y2 = 25

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?