NEED HELP ASAP NOW OR I DIE. -9 to the 28th power as a positive or negative explain

How can you check that you have correctly converted frequencies to relative frequencies?

If f(x)=3 over x+2 - square root x-3 then f(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.