A)
Let X be the food expenditure of a family.
Let the population mean of an expenditure of a family be.
Let the population standard deviation of an expenditure of a family be.
The proportion families spend more than $30 but less than $490 per month on food is,
Answer: the bottom right one
Step-by-step explanation:
you can put your pencil like this I and follow the line without two parts touching the line (vertical line test)
Answer:
C. y = 3/5x + 13/5
Step-by-step explanation: