3. PROFIT The expressions c - e, where c stands for the money collected and e
stands for the expenses, is used to find
the profit from a basketball concession.
If $500 was collected and expenses
were $150, find the profit for the
concession.

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?