Question 1171022

a. State sales tax S is directly proportional to retail price p . An item that sells for 180 dollars has a sales tax of 10.22 dollars. 

Find a mathematical model that gives the amount of sales tax S in terms of the retail price p .

Function:S(p)=

b. What is the sales tax on a 350 dollars purchase. Round to the nearest cent.

The sales tax on a 350 dollar purchase is $
<pre>{{{matrix(1,7, S, "=", 10.22/180, "=", .0568, or, "5.68%")}}}
Correct answer: {{{highlight_green(matrix(1,4, "Function:", S(p), "=", .0568p))}}}
Substitute $350 for p in the above function, and you should get a correct answer of: {{{highlight_green("$19.88")}}}