3 Here are the prices of some items and the amount of sales tax charged on each in Nevada.
ול
cost of item ($)
sales tax ($)
10
0.46
50
2.30
5
0.23
Write an expression for the amount of sales tax charged, in dollars, on an item that costs c dollars.
Find each amount:

With: label the vertices and all the elements needed. find x

I’m really confused and need to learn this

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