Answer: the standard deviation decreases
Step-by-step explanation:
Answer:
a) £11.46
b) £8.54
a) Ffion's Bill = £2.49 + 2(£3.99) + £0.99
= £2.49 + £7.98 + £0.99
= £11.46
b) Change Received = £20 - £11.46
= £8.54
CU=-3(5,-12)
CU=36-15
CU=21
The answer is A=21