There is a sales tax of $5 on an item that costs $51 before tax. a second item costs $173.40 before tax. what is the sales tax on the second item?

17$

Step-by-step explanation:

There is a sales tax of $5 on an item costing $51 before tax.

So the ratio of sales tax to price before tax is the following.

$5 sales tax

$51 price before tax

A second item costs $173.40 before tax.

We have to find the sales tax, which we call Q. So we use the following proportion.

$5 sales tax=  $Q sales tax

$51 price before tax  $173.40 price before tax

Another way

Using the method of cross products, we solve for Q.

551=Q173.40

51Q=·5173.40

Q=·5173.4051

Q=17

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;