7. Write all the set of ordered pairs if y = 2x:X E {1,2,3}.​

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!