Jackson wants to earn a grade of at least a 90 in Ms. Prier's algebra class. His
grade will be determined by the average of his 3 tests. The first test, he scored an
82. The second test he scored a 92. What is the lowest score he can receive to be
certain he earns a 90 for the 9 weeks?
Let
x -----> score in the third test
average=(82+92+x)/3
the inequality that represents this situation is
[tex]\frac{82+92+x}{3}\ge90[/tex]Remember that
"at least" means -----> greater than or equal to
solve for x
[tex]\begin{gathered} 174+x\ge270 \\ x\ge270-174 \\ x\ge96 \end{gathered}[/tex]therefore
