Lin's father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, 1 7% sales tax is applied. What does Lin's father pay for the meal?

19.89

Step-by-step explanation:

20 times .85= 17

17 times 1.17= 19.89

$19.89

Step-by-step explanation:

first coupon.

x/20=15/100

20×15=300

300/100=3

20-3=17

then tax

x/17=17/100

17×17=289

289/100=2.89

2.89+17=19.89

john earns $14.00 for two hours of work.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )