# Unit 7 Review

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- Q1Which situation can be represented by the equation 120 = 20nMarta has $120. She spent $20 on a dress. How much money does Marta have left?Paul had 120 marbles. He bought 20 more marbles. How many marbles does Paul have now?Sallie earned $120 on Monday. She earns a different amount each day. How much money will Sallie earn after 20 days?There are 120 students in the 6th grade at a middle school. Each class has 20 students. How many 6th grade classes are there?30s
- Q2Which inequality represents the phrase "12 is greater than a number plus 5?"12 < n + 55 < n + 125 > n + 1212 > n + 530s
- Q3Which equation can be represented by the equation x + 10 = 68?The average height of an adult is 10 inches. This is 68 inches less than the average sixth grader. What is the average height of a sixth grader?The average height of an adult is 68 inches. This is 10 inches more than the average sixth grader. What is the average height of a sixth grader?The average height of an adult is 68 inches. This is 10 inches less than the average sixth grader. What is the average height of a sixth grader?The average height of an adult is 10 inches. This is 68 inches more than the average sixth grader. What is the average height of a sixth grader?30s
- Q4Jack has 35 pages to read by the end of the day. he has read 15 pages so far. Which equation represents the number of pages Jack still has to read?35 = p - 1535 = p + 1515p = 35p - 35 = 1530s
- Q5Allen has $10 to spend. He bought a sandwich for $3.50 and a drink for $2.50. Which inequality represents the amount Allen has left to spend?3.50 + 2.50 + m >= 103.50 + 2.50 + m <= 10m <= 10 - 3.50 + 2.50m <= 10(3.50 + 2.50)30s
- Q6Which inequality represents the statement, "4 more than a number is at least17?"n + 4 <= 17n - 4 >=17n - 4 <= 17n + 4 >=1730s
- Q7Determine if the value makes the equation true: -12 + x = -15; x = -3FalseTrue30s
- Q8Determine if the value makes the equation true: -24 > -15x; x = -3TrueFalse30s
- Q9Mr. Warren has 22 quarters in his truck. This is less than four times the number of quarters Mrs. Warren has in her van. The inequality shown below expresses the relationship between the numbers of quarters they have. 4n > 22. Which of the following could be the number of quarters Mrs. Warren has in her van?5645.530s
- Q10Justin needed to cook 125 hot dogs for the tailgate party. His grill ran out of gas after cooking only 38 hot dogs. Just uses the equation below to determine how many hot dogs he still needs to cook. 125 = 38 + h. Which value represent the number of hot dogs Justin still needs to cook?11363879730s
- Q11For which equations is y = 7 a solution?7y = 1y + 7 = 0y - 26 = -19y/2 = 1430s
- Q12Which is an equation?45/x20x = 20017 + x90 - x30s
- Q13What is a solution to the equation 6t = 114?t = 108t = 120t = 684t = 1930s
- Q14What is the solution to the inequality -6x < -18?x <= 3x > 3x >= 3x < 330s