Answer :
[tex]64+69+73 = 206[/tex]
[tex] \frac{206+x}{4} =70[/tex]
[tex]206+x=280[/tex]
[tex]x=74[/tex]
Andrew needs at least a 74% on the final exam.
[tex] \frac{206+x}{4} =70[/tex]
[tex]206+x=280[/tex]
[tex]x=74[/tex]
Andrew needs at least a 74% on the final exam.