Mack is selling beaded necklaces and beaded wristbands at the Craft Market. A necklace requires 40 minutes to make.
A wristband requires 25 minutes to make.
Mack has 360 minutes to make the necklaces and wristbands.
Additionally,

Mack wants to make no more than 12 items.
When Mack sells the necklaces and wristbands at the Craft Market, he will make $3.00 profit per necklace and $2.00 profit per wristband.
Let x = the number of necklaces Mack makes.

Let y = the number of wristbands Mack makes.