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Pearson Algebra 2 Common Core, 2011
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Pearson Algebra 2 Common Core, 2011 View details
2. Properties of Real Numbers
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Exercise 73 Page 17

Start with writing a rule for the graph.

H

Let's first write a rule for the given graph that show the increase in cost.

Let's show each value using a table.

Minutes Cost (dollars)
0 10
100 20
200 30
300 40

By interpreting the table, we can say that the beginning cost was $10 and it increases $10 after every 100 minutes.

Change in Minutes Minutes Cost (dollars) Change Cost
0 10
+100 ↪ 100 20 +10 ↩
+100 ↪ 200 30 +10 ↩
+100 ↪ 300 40 +10 ↩
Thus, we can represent the cost for n minutes plan as shown below. C_n= 10+n/10 Using this rule, let's determine the truth value of each option. We will first start with option A.
C_n=10+n/10
Substitute

n= 400

C_(400)=10+400/10
CalcQuot

Calculate quotient

C_(400)=10+40
AddTerms

Add terms

C_(400)=50
Since the cost of 400-minute plan is $ 50, option A is incorrect. We can examine the other options in the same way.
Option Statement Substitution Height (in.) Truth Value
F A 400-minute plan costs $40. C_(400)=10+400/10 C_(400)=$50 False
G A 100-minute plan costs $10. C_(100)=10+100/10 C_(100)=$20 False
H A 1000-minute plan costs $110. C_(1000)=10+1000/10 C_(1000)=$110 True
I A 200-minute plan costs $35. C_(200)=10+200/10 C_(1000)=$30 False

As a result, option H is the best statement about the graph.

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arrow_right Lesson Check p.15
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Lesson Check 5 (Page 15)
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arrow_right Practice and Problem-Solving Exercises p.15-17
Practice and Problem-Solving Exercises 10 (Page 15)
Practice and Problem-Solving Exercises 11 (Page 15)
Practice and Problem-Solving Exercises 12 (Page 15)
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Practice and Problem-Solving Exercises 21 (Page 15)
Practice and Problem-Solving Exercises 22 (Page 15)
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Practice and Problem-Solving Exercises 24 (Page 15)
Practice and Problem-Solving Exercises 25 (Page 15)
Practice and Problem-Solving Exercises 26 (Page 15)
Practice and Problem-Solving Exercises 27 (Page 15)
Practice and Problem-Solving Exercises 28 (Page 15)
Practice and Problem-Solving Exercises 29 (Page 15)
Practice and Problem-Solving Exercises 30 (Page 15)
Practice and Problem-Solving Exercises 31 (Page 15)
Practice and Problem-Solving Exercises 32 (Page 15)
Practice and Problem-Solving Exercises 33 (Page 15)
Practice and Problem-Solving Exercises 34 (Page 15)
Practice and Problem-Solving Exercises 35 (Page 15)
Practice and Problem-Solving Exercises 36 (Page 15)
Practice and Problem-Solving Exercises 37 (Page 15)
Practice and Problem-Solving Exercises 38 (Page 15)
Practice and Problem-Solving Exercises 39 (Page 15)
Practice and Problem-Solving Exercises 40 (Page 15)
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Practice and Problem-Solving Exercises 49 (Page 16)
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Practice and Problem-Solving Exercises 52 (Page 16)
Practice and Problem-Solving Exercises 53 (Page 16)
Practice and Problem-Solving Exercises 54 (Page 16)
Practice and Problem-Solving Exercises 55 (Page 16)
Practice and Problem-Solving Exercises 56 (Page 16)
Practice and Problem-Solving Exercises 57 (Page 16)
Practice and Problem-Solving Exercises 58 (Page 16)
Practice and Problem-Solving Exercises 59 (Page 16)
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Practice and Problem-Solving Exercises 67 (Page 16)
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arrow_right Standardized Test Prep p.17
Standardized Test Prep 72 (Page 17)
Standardized Test Prep 73 (Page 17)
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arrow_right Mixed Review p.17
Mixed Review 75 (Page 17)
Mixed Review 76 (Page 17)
Mixed Review 77 (Page 17)
Mixed Review 78 (Page 17)
Mixed Review 79 (Page 17)
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Mixed Review 81 (Page 17)
Mixed Review 82 (Page 17)
Mixed Review 83 (Page 17)