After being exposed to electro magnetic shrinking machine Joe’s height decrease by 120 cm over 1.5 seconds is high decrease by the same amount each second how much did Joe’s height change each second

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

Need on this one asap im almost done with this subject

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)