River C is 100 miles longer than River D. If the sum of their lengths is 5,500 miles, what is the length of each river?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

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.

Will positive numbers always have a higher absolute value than negative numbers?