A pair of shoes, originally priced at $50, is on sale for 20% off. What is the sale price of the shoes?

40$

Step-by-step explanation: So if we want to find 20% of 50$ you must use the following equation

Y=50(1-.2)  

after you subtract ,2 from 1 you should get .8

Y=50(.8)

multiply .8 to 50 dollars and get 40 $

Y=50x.8=40

Y=40

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.