A sweater is on sale for 30% off. The price of the sweater is $40 how much money will be saved

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Which graph corresponds to the function f(x) = x2 + 4x – 1?