If your dinner bill was $80 and you left a 15% tip. How much money did you leave as a tip? What is your total bill cost?

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?

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)