Afunction is created to represent the amount of money you save or spend each day of the week. what restrictions would be made to the range?

a) the range would only include integers.
b) the range would only include positive integers.
c) the range would only include negative integers.
d) the range would include all real numbers.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Me d is also an option but i couldn't get it in the picture

Which graph shows the solution to the system of linear inequalities? y-4t< 4 y