Which of these is the algebraic expression for "some number to the power of 4? "

x4

4x

4x

x + 4

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

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 : )

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)