B. A vacationer has $300 to spend over the next 20 days. The first two days, she spends $20 on food each day. She visits
with family members for the next four days and does not
spend any money. She then spends $20 on transportation
on each of the remaining days until she spends all of
her money. The function graphed models the amount of
money left after x days.

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

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?

I’m still confused on how to work the percentages