1 Name: ___________________________ Math 3 Cumulative Review Unit 1 Graph each of the following. 1a. 2 − 5 ≥ 10 2. { ≥ −3 + 2 < 3 4 −1 1b. Are points on the line 2 − 5 ≥ 10 solutions for the inequality? Using a sentence or two, explain why or why not. 3. { ≤ − + ≤ ≥− Find two solutions that work for all three inequalities. 4. Explain why a system of equations only has one solution while a system of inequalities has infinitely many solutions.
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Name: ___________________________
Math 3 Cumulative Review Unit 1
Graph each of the following.
1a. 2𝑥 − 5𝑦 ≥ 10 2. { 𝑦 ≥ −3𝑥 + 2
𝑦 <3
4𝑥 − 1
1b. Are points on the line 2𝑥 − 5𝑦 ≥ 10 solutions for the inequality? Using a sentence or two, explain
why or why not.
3. {
𝒚 ≤ 𝟑−𝟒𝒙 + 𝒚 ≤ 𝟖
𝒚 ≥ 𝒙 − 𝟑
Find two solutions that work for all three inequalities.
4. Explain why a system of equations only has one solution while a system of inequalities has infinitely many solutions.
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5. Superbats Inc. Manufactures two different types of wood baseball bats, the Homer-Hitter and the Big Timber. The Homer-Hitter takes 5 hours to trim and turn on the lathe and 4 hours to finish. Each of the Homer-Hitter sold makes a profit of $19. The Big Timber takes 10 hours to trim and turn on the lathe and 6 hours to finish, and its profit is $34. The total time available for trimming and lathing is 140 hours. The total time for finishing is 90 hours. How many of each type should be produced in order to maximize their profit? What is the maximum profit? Define your variables: X= Y= Objective Function: Constraints: Graph the system:
Show ALL work to find maximum profit:
Final answer written in a full sentence:
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Unit 2 Given the following sequences, determine whether it’s arithmetic, geometric or neither. Then find the next 3 terms. 6. -25, -34, -43, -52, … 7. -2, 8, -32, 128, …
8. -58, -39, -20, -1, … 9. 5
3,
9
4,
13
5,
17
6,
21
7, …
Use the given equation to find the first 3 terms of the sequence. 10. 𝑎𝑛 = −3𝑛 + 8 11. 𝑎𝑛 = 𝑎𝑛−1 ∙ 4 𝑎1 = 3 Given the first 4 terms of the sequence, find the explicit formula and the recursive formula.
12. 22, 14, 6, -2, … 13. 2
3, 1,
3
2,
9
4,
27
8, …
Write the explicit formula for the equation. 14. 𝑎𝑛 = 𝑎𝑛−1 ∙ 5 15. 𝑎𝑛 = 𝑎𝑛−1 − 1.5 𝑎1 = −2 𝑎1 = 7 Write the recursive formula for the equation. 16. 𝑎𝑛 = −3𝑛 + 1.7 17. 𝑎𝑛 = −3(4)𝑛−1
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Use formulas for sequences and series to solve each of the following. Show ALL work for full credit. Write your final answer in a sentence. 18. Hector gets better and better at a video game every time he plays. He scores 20 points in the first game, 25 in the second, 30 in the third, and so on. How many points will he score in his 27th game? How many points total did he score? Write your sentences here: 19. Samantha decides that she is going to save $500 of her paycheck each month. As hard as she tries, each month she only saves 80% of the previous month. What does she save on the 11th month? How much did she save total in those 11 months? How much would she save if she continued the pattern forever? Write your sentence here: Unit 3
Write the equation of a line parallel to each of the following. Show ALL work for full credit.
20. 7𝑥 + 3𝑦 = 33 21.
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22. Parallel to 𝑦 = 3𝑥 + 1 through (−7, 4)
Write the equation of a line perpendicular to each of the following. Show ALL work for full credit.
23. 𝑦 = −2𝑥 + 13 24.
Find the missing angles given that a ∥ b, m∠1= 𝟗𝟒°, and m∠2= 𝟓𝟑°.