Does it say that for you guys it also says it on challenges blah blah completed u8p4 rank: hand 171/250 my challenges an error occured, try again later

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

How does the graph of g(x)=⌊x⌋−3 differ from the graph of f(x)=⌊x⌋? the graph of g(x)=⌊x⌋−3 is the graph of f(x)=⌊x⌋ shifted right 3 units. the graph of g(x)=⌊x⌋−3 is the graph of f(x)=⌊x⌋ shifted up 3 units. the graph of g(x)=⌊x⌋−3 is the graph of f(x)=⌊x⌋ shifted down 3 units. the graph of g(x)=⌊x⌋−3 is the graph of f(x)=⌊x⌋ shifted left 3 units.

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?