(5,7) (5,4) (7,4) hope that helps
The answer is 1/4 because all you have to really do is simplify
If the value of the baseball card increases by 3% per year then we can say that each year the value of the card may be multiplied by 103% = 1.03, thus:
Value after n years = original price*(1.03)^n
Value after 15 years = 75*(1.03)^15
= $116.85
Sorry didn't know how to write the answer so I just took a screen shot of my answer for you!
Find a combination calculator, but in 14 and 4, choose combinations (not permutations) and you will see the number