Sand dollars are animals that live buried in the sand of shallow coastal waters. the thin circular body of a sand dollar is usually 2 to 4 inches wide. find the area of a sand dollar that is 3 inches wide.

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.