Answer: 54 , 55 , 56 , 57 , ...
Step-by-step explanation:
Let the third grade be x , then Jacque scores in the three tests will be :
81 , 84 , x.
the average of the scores = [tex]\frac{81+84+ x}{3}[/tex]
Since Jacque wants an average of at least 73 , this means that :
[tex]\frac{81+84+x}{3}\geq 73[/tex]
[tex]81 + 84 + x \geq 219[/tex]
[tex]165 +x \geq 219[/tex]
[tex]x \geq 219 - 165[/tex]
[tex]x\geq 54[/tex]
This means her possible scores will be :
54 , 55 , 56 , 57 , ...
