Help Martin finds a shirt on sale for 10% off at a department store. The original
price was $20. Martin must also pay 8.5% sales tax. (Example 3)
a. How much is the shirt before taxes are applied?
b. How much is the shirt after taxes are applied?

A:18 B:19.53

Step-by-step explanation:

For part A you will have to do 20 * 0.10 ( you get 0.10 by 10/100 or 10 ÷ 100) which is 2, you then have to do 20 - 2 since 2 is the discount amount which is 18.

For part B: You do 8.5 /100 to get 0.085 for tax, you then do 18 * 0.085 = 1.53 which is the tax amount. You add 18.00 + 1.53 and get 19.53.

Hope this helps!

Edit: * = Multiplication

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer