Can u guys do this question.

bryce is an author. his publisher pays him a fixed allowance of 5000 dollars per month plus 4.5 per cent royalty on sales. what would be his income for a month in which his book sales totalled 2000 dollars

How do you find the equation of line of best fit? urgent

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?