The perimeter of a rectangle is 28 cm and it’s length is 8cm .calculate the width

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

Solve the system of equations. x=-2y+1 and x+2y=9. show work