Anyone like biscuits and gravy

Write the sentence as an equation. 6 fewer than the quantity 140 times j equals 104

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

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 : )