Help

Which expression is equivalent to 2x^2+7x+4?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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 : )