A salesperson at a jewelry store earns 3% commission each week. Last week, Heidi sold $ 640 worth of jewelry. How much did she make in commission? How much did the jewelry store make from her sales?

19.2 i think lol

Step-by-step explanation:

only answering this for the points i know that im like 10 months late

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent