How can you tell where to place numbers written in scientific notation on the number line

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

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.