What affect does the "k" value have on the function f(x) = log(x)?
a. the "k" value reflects the function across the x-axis.
b. the "k" value moves the graph up or down.
c. the "k" value moves the graph left or right.
d. the "k" value stretches the graph vertically by a factor of .

An art teacher made a copy of a small painting. to make the painting easier to see the teacher enlarged the area of the painting by 49%. let y respresent the area of the original painting. the expression below is one way to resperesnt the area of the new painting.find two equivalent expressions that would give the area of the new painting y+0.49y