Use your answer to part (a) to decide if the two methods give the same answer. 7.EE.2 Ticket to Ride Malia is at an amusement park. She bought 14 tickets, and each ride requires 2 tickets. Write an expression that gives the number of tickets Malia has left in terms of x, the number of rides she has already gone on. Find at least one other expression that is equivalent to it. represent the number of tickets Malia has left after she has gone on x rides. 14−2x How can each of the following numbers and expressions be interpreted in terms of tickets and rides? 14 −2 2x also represent the number of tickets Malia has left after she has gone 2(7−x) on x rides. How can each of the following numbers and expressions be interpreted in terms of tickets and rides? 7 (7−x) 2 7.EE.3 Shrinking When working on a report for class, Catrina read that a woman over the age of 40 can lose approximately 0.06 centimeters of height per year. Catrina's aunt Nancy is 40 years old and is 5 feet 7 inches tall. Assuming her height decreases at this rate after the age of 40, about how tall will she be at age 65? (Remember that 1 inch = 2.54 centimeters.) Catrina's 90-year-old grandmother is 5 feet 1 inch tall. Assuming her grandmother's height has also decreased at this rate, about how tall was she at age 40? Explain your reasoning. Assessment Checks Assessment Check 1 Which expression represents the sum of (2x 5y) and (x + y)? – 3x 4y – 3x 6y – x 4y – x 6y –
Use your answer to part (a) to decide if the two methods give the same answer. 7.EE.2 Ticket to Ride Malia is at an amusement park. She bought 14 tickets, and each ride requires 2 tickets. Write an expression that gives the number of tickets Malia has left in terms of x, the number of rides she has already gone on. Find at least one other expression that is equivalent to it. 14−2x represent the number of tickets Malia has left after she has gone on x rides. How can each of the following numbers and expressions be interpreted in terms of tickets and rides? 14 −2 2x 2(7−x) also represent the number of tickets Malia has left after she has gone on x rides. How can each of the following numbers and expressions be interpreted in terms of tickets and rides? 7 (7−x) 2 7.EE.3 Shrinking When working on a report for class, Catrina read that a woman over the age of 40 can lose approximately 0.06 centimeters of height per year. Catrina's aunt Nancy is 40 years old and is 5 feet 7 inches tall. Assuming her height decreases at this rate after the age of 40, about how tall will she be at age 65? (Remember that 1 inch = 2.54 centimeters.) Catrina's 90-year-old grandmother is 5 feet 1 inch tall. Assuming her grandmother's height has also decreased at this rate, about how tall was she at age 40? Explain your reasoning. Assessment Checks Assessment Check 1 Which expression represents the sum of (2x – 5y) and (x + y)? 3x – 4y 3x – 6y x – 4y x – 6y
7th%20Grade%20Unit%203%20Plan.docx