The sales tax for an item was $6.40 and it cost $320 before tax. Find the sales tax rate. Write your answer as a percentage.

2%

Step-by-step explanation:

Find the sales tax rate by dividing the amount of sales tax by the original cost:

6.40/320

= 0.02

So, the sales tax rate is 2%

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

3x + 4y -25 =0 represents the amount of change sianna should recieve