You work for a poster company that sells prints of album covers. You sell posters at the prices given in the table. Number of Posters Price
2 $40
3 $50
5 $70
10 $120

What is the approximate percentage difference of the best and worst poster deals according to their unit costs?

A.
15%
B.
40%
C.
50%
D.
67%

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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.

no ,sorry if you needed it but you can ask and try to see if any one will anwser ,

step-by-step explanation:

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have a nice day