The formula C=2.2k + 4 can be used to calculate the cost in dollars, C, of travelling by taxi for a distance of k kilometres. Find the cost of travelling 4.5km by taxi.

13.9

10.7

103

6.244

3

1

Simplify

4

1

Simplify 4a + 11 - 2a

6a + 11

17a

11 - 2a

2a + 11

5

1

Simplify

4

4a

6

1

Simplify

7

1

Expand

8

1

Simplify

9

1

What is the constant variable in the expression

10

1

Expand and simplify

11

1

Simplify

12

1

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