68 miles to 42.5 miles percent change

Me. i need an answer asap. , you! select the correct answer from each drop-down menu. simplify the given polynomial and use it to complete the statement. the polynomial simplifies to an expression that is a blank with a blank degree of blank .

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]