Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
-) Susan, an artist, plans to paint and sell some miniature paintings. She just bought some
brushes for $16, and paint and canvas for each painting costs $49; she will sell each painting
for $65. Once Susan sells a certain number of her paintings, she will be breaking even. How
much will Susan have earned? How many paintings will that be?
- Susan's expenses and receipts will both total $
when she has sold
of her
paintings.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0