Henry

Henry has scored 72, 67, 82, and 79 on his Algebra tests. Use an inequality to find the scores he must take on the final exam to pass the course with an average of 77 or higher, given that the final exam counts as two tests.

Correct answer:

X =  81

Step-by-step explanation:

$$\begin{gathered} 72+67+82+79+2\cdot X\ge 6\cdot 77 \\ 72+67+82+79+2\cdot X=6\cdot 77 \\ 2X=162 \\ X=\frac{162}{2}=81 \\ X=81 \\ X\ge 81 \end{gathered}$$

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