Sierra started with savings of $260 and adds $8 of her savings every week. Brian started with savings of $650 and spends $5 of his savings every week. What is x, the number of weeks that need to pass in order for Sierra and Brian to have the same amount of savings? 8x + 260 = -5x + 650

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

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.

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?