Answer:
q = 3 units
Step-by-step explanation:

Where's your number line?
This is the definition of a rational number.
Answer: the large jar is cheaper
Step-by-step explanation:
If you divide the £1.54 by 440g and £1.26 by 340g, you'll find which one is cheaper per gram :
1.54/440 = 0.0035
1.26/340 = 0.0037
So, by comparing both prices/gram, you've found that the large jar is cheaper.
The answer u have is correct how it is