Here is someone's solution to the equation 3x2 – 42 = 20.
Q=3 b = -4 C = 20
-b + 6² - 4ac
20
-4+(-4)2 - 4(3)(20)
2(3)
-4Ł V-16 - 240
6
-4 V-256
6
No solutions
Identify 3 of the 4 errors and briefly explain why it is an error.

No joke answers or will be reported

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.