the difference of 16 and k is seven, what is k?how will you arrive at the middle term of a sequence of a binomial​

In two or more complete sentences, determine the appropriate model for the given data and explain how you made your decision. (1,-1), (2,0.5), (5,1.5), (8,2)

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

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 : )