Can help with this Multiplying Two Fractions and Determining Area thank and don't answer if you don't understand but if you have the answer please do help me thank you. This is not free points.

Math i have no idea how to do a and b

Solve 13 + w/7= -18 (w/7 is a fraction)

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.