What you have written here is an equation.
You can define as
a2+b2=y
If you want to derive a^2+b^2 from ( a+b)^2
(a+b)2=a2+b2+2ab
Ora2+b2=(a+b)2−2ab
So what is the question? You didn’t write it here but you can write it in the reply and I’ll help.
Answer:
80%
Step-by-step explanation:
Cost of materials for a bar of soap = $ 2.50
Selling price for a bar of soap = $ 4.50
Markup percent = 
Markup percent = 
= 
= 
= 
= 80<em>% </em>
Answer:
$121
Step-by-step explanation:
A suitable calculator or spreadsheet can tell you the payment amount for the given loan values. The annual interest rate will be 12 times the monthly, rate, or 2.4%. The number of monthly payments in 12 years is 12×12 = 144.
__
A calculator shows the monthly payment will be about $121.
__
If you want to figure this "by hand," the amortization formula is used.
A = Pr/(1 -(1+r)^-t)
where P is the loan amount, r is the monthly interest rate, and t is the number of months.
A = 15100(0.002)/(1 -(1.002^-144)) ≈ 120.789 ≈ 121
The monthly payment would be $121.