Page 224 - Algebra 1

*10. Model There are 10 little marbles and 4 big marbles in a bag. A big marble is drawn (33) and not replaced. Draw a picture that represents how the contents of the bag
change between the first draw and the second draw.
*11. Write Explain the difference between probability and odds. (33)
*12. True or False: Two rolls of a number cube are independent events. (33)
*13. Is the set of whole numbers closed under subtraction? Explain. (1)
*14. Multiple Choice A bag contains 3 blue stones, 5 red stones, and 2 white stones. (33) What is the probability of picking a blue stone, keeping it, and then picking a
white stone?
A _3 B _1 C _3 D _1 50 15 28 2
Before draw
15. Stock Market The value of an investor’s stock changed by -1_3 points last week. (11) 4
This week the value changed by 3 times as much. How much did the value of the investor’s stock change this week?
*16. Predict What is the probability of rolling a 3 twice in a row on a six-sided number (33) cube?
17. Write Give an example of a situation in which someone may want to use large (27) intervals on a graph to persuade people to come to a certain conclusion.
*18. Analyze Simplify x3 · x-3. What is the mathematical relationship between xn and x-n? (32)
19. Time A nanosecond is 10-9 times as fast as 1 second and a microsecond is (32) 10-6 times as fast as 1 second. How much faster is the nanosecond than the
microsecond?
20. Convert 30 quarts per mile to gallons per mile.
(31)
*21. Error Analysis Two students solved the proportion _5 = _c . Which student is correct? (31) 9 45
Explain the error.
*22. Vehicle Rental One moving company charges $19.85 plus $0.20 per mile to rent a (28) van. The company also rents trucks for $24.95 plus $0.17 per mile. At how many
miles is the price the same for renting the vehicles?
23. If a set of ordered pairs is not a relation, can the set still be a function? Explain. (25)
Student A
_5 = _c 9 45 9c = 225 c = 25
Student B
_5 = _c 9 45 9c = 225
c = 2025
Lesson 33 209