Course 2 Chapter 7 Team Review
CL 7118. Aja and Emilie were riding their skateboards. They knew that they could ride 3miles in 20 minutes. Use your problem-solving strategies to find out how far the girls can ride in 45minutes.
CL 7119.Harley was eating pizza and had already eaten six pieces before his sister, Samantha, got home. Samantha was worried that she was not going to get a fair share of the pizza and wanted to know how many pieces were in the pizza originally. Harley told her,“I have only eatenof the pizza.”Help Samantha figure out how many pieces of pizza there were to start with.
CL 7120. Marcus has a summer job where he makes $45 a day. Yesterday, his boss told him that he was getting a raise to $63 a day because he was such a hard worker. What is the percent increase in Marcus’salary?
CL 7121. Simplify and solve the following equations.
1. 5x + 2 = −3x − 14
2. + 1 = x − 4
3. 0.5x − 0.5 = 0.75x + 1 − x
4. 5x + 6 − 2x = 3x − 7
CL 7122.Joe is using his allowance money to download songs from the Internet. He can download them at a rate of eightsongs every 10 minutes. Jasmine, who is downloading songs with the money she made from her part-time job, can download at a rate of 12 songs every 15 minutes. Who is downloading songsfaster?
CL 7123. Solve the inequality 8 + x 3and graph the solutions on a number line.
CL 7-124. A biologist was sitting near a pond and noticed a large number of dragonflies. He also saw both frogs and fish trying to eat the dragonflies. He counted a total of 89 fish, frogs, and dragonflies. He noticed that there were four times as many dragonflies as fish and that the frogs were five more than twice the number offish.
-Use the 5-D Process to determine how many fish, frogs, and dragonflies the biologistcounted.
CL 7-125. Find the probability of each of the following events. Show all of yourwork.
1. Flipping a penny and getting a “heads” and then flipping a nickel and getting a“tails.”
2. Rolling a 5 on a standard number cube and picking a 10 or a jack from a standard deck of playingcards.
Answers and Support for Closure Problems
What Have I Learned?
CL 7118. / · The girls can ride 6miles in 45minutes. / Lessons 7.1.1, 7.1.2, 7.2.1, and 7.2.2
MN: 7.1.4, 7.2.2
LL: 7.1.3, 7.2.2
CL 7119. / · There were 16 pieces in the pizza. / Lessons 7.1.4 and 7.1.5
LL: 7.1.5
CL 7120. / · Marcus’ salary increased by 40%. / Lesson 7.1.7
MN: 7.1.7
CL 7121. / 1. x = −2
2. x = 15
3. x = 2
4. no solution / Lessons 7.1.4, 7.1.5, and 7.1.6
MN: 7.1.6
LL: 7.1.5
CL 7122. / · They are downloading at the same rate. / Lessons 4.2.3
MN: 4.2.4
CL 7123. / · x ≤ −5 / Section 6.1
MN: 6.1.1, 6.1.4
LL: 6.1.4
CL 7-124. / · 12 fish, 29 frogs, 48 dragonflies / Section 5.3
MN: 5.3.3
LL: 5.3.4
CL 7-125. / 1.
2. / Section 5.2
MN: 5.2.4 and 5.2.5
LL: 5.2.1 and 5.2.5