The amount of sales tax varies directly with the cost of the purchase. if the sales tax is $3.80 on a purchase of $76 what would be the sales tax on a purchase of $46

The sales tax is equal to

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or

Let

y-----> the cost of the purchase

x ----> the sales tax

step 1

Find the value of k

For

substitute

The linear equation is equal to

step 2

what would be the sales tax on a purchase of $46

For

substitute in the equation

$2.30

Step-by-step explanation:

We have been given that the amount of sales tax varies directly with the cost of the purchase.

We know that a direct variation in in form , where, y varies directly with x and k is constant of variation.

First of all, we will find constant of variation as:

To find the amount of sales tax on a purchase of $46, we will substitute in our equation as:

Therefore, the sales tax would be $2.30.

step-by-step explanation:

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

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