Felix had a test average of 92.2 last semester. His first four test grades were \( 97,94,93 \), and 86 . Use the formula \( \bar{x}=\frac{x_{1}+x_{2}+\ldots+x_{n}}{n} \) to find his score on the fifth test.

10. \( \begin{array}{l}x+y=3 \\ 2 x+4 y=8\end{array} \)

5. Fourth term of arith sequence is 11 , and the \( 6^{2} \) term is 17 . Find the second term. \( a_{4}=11 \quad a_{6}=17 \quad a_{1}+(n-1) \)

Determine whether the following equation defines \( y \) as a function of \( x \). \[ x^{2}+y=49 \] Does the equation \( x^{2}+y=49 \) define \( y \) as a function of \( x \) ? Yes No

\[ 11^{-x-4}=4^{3 x} \] Write the exact answer using either base-10 or base-e logarithms. \( x=\square \)

Solve the absolute value inequality. \( |x-6| \geq 1 \) A. The solution set in interval notation is (Simplify your answer.) B. The solution set is \( \varnothing \).