A baseball manager bought 4 bats and 9 balls for $76.50. On another day, she bought 3 bats and a dozen balls at the same prices and paid $81.00. How much did she pay for each bat and each ball. Write a system of equations in order to solve this problem.

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.