3. Suppose a new car is $10000 and a new truck is $15000. If they both depreciate $2000 after one year then the car's percent of decrease must be the same as the truck's percent of decrease.

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.