The image of a parabolic lens is traced onto a graph. the function f(x) = 1/4(x+8)(x-4) represents the image. at which points does this image cross the x-axis?

Can i get some on 18,20,& 22? or one of them

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

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.