quick combining like terms

1) -8(9k - 4)= 9k + 32

2) 8m + 6m=?

3) -6(2 + 3r)

4) 9 + 3n - 2

5) -5(-7 + 4p)

6) 2c - 5 + 8c

7) 8 + 6z + 3

8) 9p + p

9) 2(-6b + 5)

10) 8 - 3b + 7

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.