Hope this helps but I think it might be:
Part A: c=0.75p
the cost of shipping for 2 pounds
c=0.75p
c=0.75*2
c=$1.50
Part B: c=0.05p
"Sum" means at least two numbers added together.
There's no such thing as the sum of a single number.
38 is quotient and 6 is remainder
Answer:
$97.38
Step-by-step explanation:
Subtract the finance charge and new purchases from the previous balance.
102.35 - 1.24 - 15.73 = 85.38
Add the payment/credit
85.38 + 12 = 97.38
B inverse you swap x and y