What is the value of this expression

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 : )

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?