Show and explain how replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions as the one shown.

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?