You need to solve the following equation:
-0.5x^2 +36x -161 = 451
Set right side to 0
-0.5x^2 +36x -612 = 0
Multiply by -2 to get rid of decimal and leading neg coefficient.
x^2 -72x + 1224 = 0
Use quadratic formula:
a = 1, b = -72, c = 1224

Therefore the min price to have 451 profit is $27.51
The question is not clear enough
Answer:
The Final answer will be
with remainder 0.
Step-by-step explanation:
We have attached the division for your reference.
Given:
Dividend = 
Divisor= 
Explaining the division we get;
Step 1: First when we divide the Dividend
with divisor
we will first multiply
with the divisor then we get the Quotient as
and Remainder as 
Step 2: Now the Dividend is
and Divisor is
we will now multiply
with the divisor then we get the Quotient as
and Remainder as 
Step 3: Now the Dividend is
and Divisor is
we will now multiply 2 with the divisor then we get the Quotient as
and Remainder as 0.
Hence The Final answer will be
with remainder 0.