Page 463 - Algebra 1

22. Discounts A new pet store is selling dog food for $2 off. Another pet store is selling
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23. Error Analysis Two students solve and graph the inequality x - 5 ≤ -8. Which
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Find the common solution for each system of equations.
24. y = _3 x + 3 (67) 4
y=x
25. Multi-Step Two satellite radio companies are offering different plans. One
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dog food for $14.99. Write and solve an inequality to represent the highest original price, before the discount, that will make the dog food at the new pet store cheaper.
student is correct? Explain the error.
Student A
-6 -4 -2 0
Student B
0246
offers a flat fee of $15 per month for all stations. The second charges a rate of y = $10 + $1.5x, where x is the number of additional stations. Do the plans ever cost the same amount?
a. How many stations can a consumer purchase from the second company before
exceeding the flat fee of $15?
b. Classify the system of equations for the plans offered by both companies.
c. How is the classification of the equations misleading given the problem situation?
d. Do the plans ever cost the same amount?
26. Geometry Two secants to a circle are shown at right. Classify the system formed by
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the equations for these two lines.
*27. Predict If two standard number cubes are rolled 100 times, predict the number
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of times that a sum of 7 or 11 will be rolled.
*28. Multiple Choice Which one of the following situations describes mutually
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*29.
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*30. Analyze Given two possible events, A and B, will the probability of either A or B
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exclusive events?
A rolling doubles or a sum of 4 with two number cubes
B choosing an odd number or a multiple of 3
C tossing a coin heads-up or rolling a 2 with a number cube D rolling two 5s or a sum of 12 with two number cubes
Weather Forecasting On a winter day in Maine, there was a 30% chance of only freezing rain, a 45% chance of only rain, and a 25% chance of only snow. What was the chance of getting only freezing rain or snow?
occurring be higher if they are inclusive events or mutually exclusive events?
448 Saxon Algebra 1