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Chapter 2: Q6. (page 62)

Write a variable expression to represent the phrase.

7 more than a number

Short Answer

Expert verified

7 more than a number is x + 7 (where the number is x)

Step by step solution

01

Step-1 – What is a variable?

A symbol we usually pick letters to be symbols, usually represents a number. Any letter you choose can be a variable.

02

Step-2 – How do you describe a Algebraic Expression? 

A Algebraic is a symbol that stands in for an unknown value in a mathematical expression. A variable expression is a combination of terms and mathematical operations that contains at least one variable. Example a + 2x + 10

03

Step-3 – Write a variable expression to represent the phrase. 

7 more than a number:

Let us assume the number be x, the phrase is 7 more than the number. More than means add 7 to the number.

7 more than a number: x + 7

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Most popular questions from this chapter

What are terms that have a number but no variable called?

Identify the property that the statement illustrates.

-鈥�鈥�4ab=-鈥�鈥�4ba

Agriculture A farmer grows tomatoes and cucumbers in the field shown. The annual cost

of growing tomatoes is \(.27 per square foot. The annual cost of growing cucumbers is \).10 per square foot. Let x represent the width (in feet) of the tomato portion of the field.

  1. In terms of x, what is the area of the tomato portion? of the cucumber portion?
  2. Write and simplify an expression in terms of x for the annual cost of growing both crops.
  3. Find the annual cost of growing both crops if the width of the tomato portion is 350 feet

Extended Problem Solving You are making a rectangular rug. You want the rug to be twice as long as it is wide. Let w represent the width (in feet) of the rug.

a. Write an expression in terms of w for the perimeter of the rug.

b. Write an expression in terms of w for the area of the rug.

c. Calculate Copy and complete the table.

d. Writing Explain how doubling the width of the rug affects the perimeter and the area

Tell whether the given value of the variable is a solution of the equation.

21-z=-鈥�鈥�4;鈥�鈥�z=25
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