1.7 A verbal statement relating the number of cars to the number of wheels is: 1.1.8 A number sentence relating the number of cars to the number of wheels is: Let c be the number of cars and w be the

1.1.7
A verbal statement relating the number of cars to the number of wheels is:
The number of wheels is four times the number of cars.

1.1.8
A number sentence relating the number of cars to the number of wheels is:
Let $c$ be the number of cars and $w$ be the number of wheels.

The number sentence is $\boxed{w = 4c}$.

1.2.1
To check if Thabo's formula $y = 5x + 10$ is correct, substitute the $x$ values from the table into the formula and compare the calculated $y$ values with the $y$ values in the table.