Answer:


Step-by-step explanation:
Given

Solving (a): Write as inverse function

Represent a(d) as y

Swap positions of d and y

Make y the subject


Replace y with a'(d)

Prove that a(d) and a'(d) are inverse functions
and 
To do this, we prove that:

Solving for 

Substitute
for d in 




Solving for: 

Substitute 5d - 3 for d in 

Add fractions



Hence:

You can express it as 24 / (8-2)
Second one
1/16
3/8 divided by 1/6=1/16
Answer:
1
Step-by-step explanation:
Mode is 1 as 1 has repeated the most number of times