Which of the following graphs shows the line that is perpendicular to y = x + 1 and passes through (1,1)?

How are algebraic expressions evaluated using substitution?

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.

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25