What are two form of writing 600,000+80,000+10

Find two rational expressions that have the difference of 2-n/n-4

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

What other information do you need to prove triangle dac=bca by asa