Q40. STAMPS For Exercises 39 and 40, ... [FREE SOLUTION]

Chapter 3: Q40. (page 144)

STAMPS For Exercises 39 and 40, use the following information.
The table shows the price for first-class stamps since the U.S. Postal Service was created on July 1, 1971.
40. Predict the price for a first-class stamp issued in the year 2010.

Short Answer

Expert verified

The price for the first -class stamp in the year 2010 is $$ \ [86.57 . \]$

Step by step solution

Step-1 – Concept of solving two equations by graphing

To graph of a linear inequality in two variables $(x a n d y)$ ,first get $y$ alone on one side. Then consider the related equation obtained by changing the inequality sign to an equality sign. The graph of this equation is a line. If the inequality is strict $(< o r >)$ graph dashed line.

Step-2 –Write the prediction equation of the graph

We know that the prediction equation of the graph is $7 y - 15 x = 21 .$

Step-3 –Price of the first-class stamp issued on the year 2010

In 2010, the age of U.S Postal service is $39 .$

Substitute $x = 39$ in prediction equation.

$\begin{array}{l} 7 y 鈭� 15 (39) = 21 \\ 7 y = 21 + 585 \\ y = \frac{606}{7} \\ y = 86.57. \end{array}$

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91影视

STAMPS For Exercises 39 and 40, use the following information.
The table shows the price for first-class stamps since the U.S. Postal Service was created on July 1, 1971.
40. Predict the price for a first-class stamp issued in the year 2010.

Short Answer

Step by step solution

Step-1 – Concept of solving two equations by graphing

Step-2 –Write the prediction equation of the graph

Step-3 –Price of the first-class stamp issued on the year 2010

One App. One Place for Learning.

Most popular questions from this chapter

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91影视

STAMPS For Exercises 39 and 40, use the following information.The table shows the price for first-class stamps since the U.S. Postal Service was created on July 1, 1971.40. Predict the price for a first-class stamp issued in the year 2010.

Short Answer

Step by step solution

Step-1 – Concept of solving two equations by graphing

Step-2 –Write the prediction equation of the graph

Step-3 –Price of the first-class stamp issued on the year 2010

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Logic and Functions

Decision Maths

Discrete Mathematics

Statistics

Pure Maths

Geometry

Study anywhere. Anytime. Across all devices.

STAMPS For Exercises 39 and 40, use the following information.
The table shows the price for first-class stamps since the U.S. Postal Service was created on July 1, 1971.
40. Predict the price for a first-class stamp issued in the year 2010.