Kind of difficult to see that
Answer:
P = $900
Step-by-step explanation:
Simple Interest Formula: 
Where A is the final amount,
P = Principal
r = Interest Rate in Percent or
per annum
t = time in years
From the information given in the question,
A = $918
r = 2% per annum or 
t = 1 year
Lets substitute these values to find P, the principal.

Therefore, P = $900
Answer:
$19.99
Step-by-step explanation:
1 lb = 16 oz
8.2 lb = (16 x 8) +2= 130
---> x = $0.154 per oz
0.154 x 130 = $19.99
No because there is a GCF of x therefore it can be factored by a GCF