Determine whether y varies directly with x. if so, find the constant of variation k.
–5y = –2x
a. yes; –2
b. yes; 5/2
c. yes; 2/5
d. no

Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. one day's discharge at its mouth, 5.6 trillion gallons, could supply all of country a's households for seven months. based on this statement, determine how much water an average household uses each month. assume that there are 100 million households in country a. country a uses approximately nothing gallons per household per month.

Which compound inequality could be represented by the graph?

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?