1 correctly uses substitution to evaluate the sum or

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1 Correctly uses substitution to evaluate the sum or difference using the given value. 1 Shows all work leading to the answer (part b). Third Problem Chosen 1 Uses the correct operation to write a rational expression that represents the situation. 2 Simplifies the expression correctly.(1pt for attempt) 1 Shows all work leading to the answer (part a). 1 Correctly uses substitution to evaluate the sum or difference using the given value. 1 Shows all work leading to the answer (part b). Fourth Problem Chosen 1 Uses the correct operation to write a rational expression that represents the situation. 2 Simplifies the expression correctly.(1pt for attempt) 1 Shows all work leading to the answer (part a). 1 Correctly uses substitution to evaluate the sum or difference using the given value. 1 Shows all work leading to the answer (part b). Solving Rational Equations-Solve Rational Equations Follow the directions to solve each problem. Show all work leading to your answer. Next, write your own problem that can be solved with a rational equation. Think of a situation where two people (or things) can work together to finish a job in less time than it takes each of them to work alone. Scoring Guide 36 Points Possible Points Received Points Possible Part 1 First Problem 2 Correctly fills in the blanks in the table. 2 Correctly writes a rational equation to represent the situation. 1 Correctly identifies the LCD. 1 Correctly solves the equation by multiplying both sides by the LCD. 2 Shows all work leading to the answer and writes a sentence that clearly explains the meaning of the answer for the situation, especially when the
answer is not a whole number. Second Problem 2 Correctly fills in the blanks in the table. 2 Correctly writes a rational equation to represent the situation. 1 Correctly identifies the LCD. 1 Correctly solves the equation by multiplying both sides by the LCD. 2 Shows all work leading to the answer and writes a sentence that clearly explains the meaning of the answer for the situation, especially when the answer is not a whole number. Third Problem 2 Correctly fills in the blanks in the table. 2 Correctly writes a rational equation to represent the situation. 1 Correctly identifies the LCD. 1 Correctly solves the equation by multiplying both sides by the LCD. 2 Shows all work leading to the answer and writes a sentence that clearly explains the meaning of the answer for the situation, especially when the answer is not a whole number. Part 2 Fourth Problem 2 Writes 3-4 clear sentences to describe a real-world situation involving working together. 2 Includes enough information to write a rational equation. 2 Defines a variable for the problem. 1 Correctly populates the table with rates based on the problem description. 1 Correctly writes a rational equation to represent the problem.

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