Donald bought 15 souvenirs during 3 days of vacation. After 4 days of vacation, how many
total souvenirs will Donald have bought? Assume the relationship is directly proportional.
souvenirs
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It is 20

Step-by-step explanation: The reason it is 20 is because it says that there are 15 souvenirs during 3 days. Knowing this factor, you are trying to figure out how many souvenirs are being purchased during one day. To figure that out, you do 15 divided by 3, which gives you 5. Then, for just on extra day, or the fourth day, you just add 5, so the answer is 20.

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 : )