SOLUTION: An item that sells for $145.99 has a sales tax of 10.22 Find a mathematical model that gives the amount of sales tax y in terms of the retail price x Use the model to find th

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Question 972971: An item that sells for $145.99 has a sales tax of 10.22
Find a mathematical model that gives the amount of sales tax y in terms of the retail price x
Use the model to find the sales tax on a purchase that has a retail price x
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
($10.22/$145.99)(100%)=7%
y=sales tax; x=retail price
y=0.07x