Your grade in a class is determined by the average of three test scores. You scored $71$ and $88$ points on the first two tests. To get an average score of at least $77$ points on the three tests, how many points would you need on the third test? Let $x$ be your score on the third test. Write an inequality to express the requirement that your average score must be at least $77$. Your inequality has three parts, a left side, a right side, and a comparison operator in the middle: $<$, $>$, $\leq$, $\geq$, $=$, or $\neq$. To type the comparison operator, enter one of these symbols: <, >, <=, >=, =, or !=. Solve this inequality. What is the minimum score that you must earn on the third test to earn a $77$ average for the three tests? You cannot score over $100$ on the third test. Use interval notation to represent the range of scores you could earn on the third test to average at least $77$ in this course.