Since the objective for the first couple of problems is cut off, I’ll provide two answers.
If it is asking you how much the tax would be, write down the first answer I give.
If it is asking you how much the item would be with tax included, wrote down the second answer I provide
11. $1.737 (or just $1.73 since there isn’t any currency that goes past the tenths place) or $30.687 ($30.68) total
12. $1.4256 (or $1.42) or $48.9456 ($48.94) total
13. $0.39 or $6.39 total
14. $2.60 or $67.60 total
15. $1.02 or $18.02 total
16. $3.60 or $51.6 total
Since the problem is now asking for the discounted price, you take new price then subtract it from the original price.
Problem 17, for example:
17. $56.25 - $11.25 = $45
18. $75
19. $12.792 (or $12.79 rounded)
20. $15.30
21. $93.75
22. $66.1
Hope this helps :-)