7. how many solutions are there for 5^2+7x-4=0

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Which ordered pair is a solution of the equation? 2x+3y=10

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.