Describe a pattern that could be represented by the expression 4m. 9. a) b) What does your variable represent? Draw a pattern that could be represented by b + 3. 362 NEL • Chapter 10 a) b) c) d) e)...

Describe a pattern that could be represented by the expression 4m.

9. a)
b) What does your variable represent?

Draw a pattern that could be represented by b + 3.

362

NEL • Chapter 10

a) b) c) d) e)

triple the width of a rectangle
8 years younger than Vijay
the area increased by 15 cm2
pencils shared equally among 4 students double the length decreased by 2 cm

12.

10. a)
b) What does the variable represent?

11.

What is the expression for the number of boys

1. 
   

   a) if there are x girls in a class of 30 students?
   

   
   


2. 
   

   b) if there are 11 girls in a class of n students?
   

   
   


3. 
   

   c) if there are x girls in a class of p students?
   

   
   

For each of the following statements, write an expression. Where possible, identify the variable, constant, and numerical coefficient in each one.

1. 
   

   a) Kate’s wage is increased by $3 an hour.
   

   
   


2. 
   

   b) The number of people at a party doubles.
   

   
   


3. 
   

   c) They sold half of the concert tickets that they expected to sell.