With the information given in the diagram, which statement is true?

Ineed me i stuck and i don’t want to get it wrong

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

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?