Solve the linear system of equations by any method.

{4x-4y=36

{5x+y=33

Solve the linear system of equations by any method

{x+4y=-1

{-8y=2+2x

The Nutty Professor sells cashews for $6.30 per pound and Brazil nuts for $4.40 per pound. How much of each type should be used to make a 24 pound mixture that sells for $5.35 per pound?

Round answers to the nearest pound.

_________________pounds of cashews

_____________________pounds of Brazil nuts

Kevin just retired, and has $560,000 to invest. A very safe Certificate of Deposit (CD) account pays 1%, while a riskier bond fund pays 4.5% in interest. Kevin figures he needs $22,000 a year in interest to live on. How much should he invest in each account to make enough interest while minimizing his risk?

$__________at 1%

$_______at 4.5%