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# Review guide end of mod 5

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### Review guide end of mod 5

1. 1. Name:______________________________ Date:______________ Math 7 Period ___ Review Guide End of Module 5 1.) Below is a random sample of the socks in Jake’s draw. What is the probability of picking a tan of a blue pair of socks? a.) 20 3 b.) 4 1 c.) 5 1 d.) 5 3 2.) A bag of marbles contains 12 red marbles, 3 green marbles, and 5 blue marbles. What is the probability a student chooses a red marble, doesn’t replace the marble, and then chooses a blue marble again? a.) 400 60 b.) 380 132 c.) 380 60 d.) 400 132 3.) Subtract the following: (-5x - 9) – (-18x – 2) a.) -23x - 11 b.) 13x - 7 c.) -23x + 7 d.) 13x - 11 4.) What is the distance between -15 and 2 on a number line? a.) 13 b.) -17 c.) -13 d.) 17 5.) You put \$1500 into your savings account. Your bank account offers a 4.5% Interest rate and you leave the money in the account for 7 years. How much interest did you earn? a.) \$472.50 b.) \$47,250 c.) \$4,725 d.) \$333.33
2. 2. 6.) Find the Mean of the following data: 18, 25, 15, 18, 20, 21 a.) 19 b.) 19.5 c.) 18 d.) 10 7.) Find the Median of the following data: 18, 25, 15, 18, 20, 21 a.) 20 b.) 18 c.) 19 d.) 18 and 20 8.) Find the Mode of the following data: 18, 25, 15, 18, 20, 21 a.) 18 b.) 10 c.) No Mode d.) 19 9.) Find the Range of the following data: 18, 25, 15, 18, 20, 21 a.) 18 b.)19 c.) 19.5 d.) 10 10.) Factor the following expression: 24x + 9 a.) 24(x + 9) b.) 3(8x + 3) c.) 4(6x + 9) d.) 3(8x + 9) 11.) Add the following: (-4x – 2) + (9x – 6) a.) 5x - 4 b.) -13x + 4 c.) 13x - 8 d.) 5x - 8 12.) What is the probability of rolling a number greater than 4 on a six sided fair number cube and flipping a heads on a coin? a.) 6 1 b.) 4 1 c.) 3 1 d.) 2 1
3. 3. 13.) You want to create a scale model of an airplane. If the actual airplane is 120ft long and you use a scale factor of 15%, how long will the model airplane be? a.) 1800ft b.) 18ft c.) 800ft d.) 135ft 14.) At the school bake sale, you sell 15 cupcakes for \$18.75. What point on the graph would represent the unit rate? a.) (1, 1.5) b.) (15, 18.75) c.) (2,1) d.) (1, 1.25) 15.) Simplify the following expression: -4(x – 2) + 9x a.) 5x - 2 b.) 13x - 8 c.) 5x + 8 d.) 5x – 8 PART 2 1.) What does the MAD describe about a set of data and how does it correspond to variability? 2.) The sum of three consecutive integers is -33. What are the three integers? Write and solve an equation to solve. 3.) Ryan has 2 more than three times the amount of baseball cards than Alex has. If the sum of their baseball cards is 50, how many cards does each boy have? Write and solve an equation to solve.
4. 4. 4.) a. Using the spinners below, construct a tree diagram and list the sample space of all possible outcomes of spinning two spinners and flipping a coin. b. What is the probability of spinning a 2? c. What is the probability of spinning an A and a 2?
5. 5. 5.) Mary planted 12 trees on Earth Day. John planted 30% more trees than Mary planted. Write and solve an equation to find the amount of trees that John planted. 6.) I want a computer that costs \$1200. I found it on sale for 20% off. How much will the sale price be if I also need to pay a 7% sales tax? 7.) Solve the following inequalities and graph the solutions on the number line. a. b. 8.) Find the area and perimeter of the following shape: A=π•r2 and C= π•d. Use the Pi button and round your answer to the nearest hundredth.