C. 12
Step-by-step explanation:
A
2*2= 4 witch 6*4= 24 and 4*9= 36
The answer is in the image
y=2x+15
where y=Value of coin
x=Age in years
Value of coin after 19 years=2*19+15
=$53
Therefore, Value after 19 years=$53
The solution is given in the image below
It will provide an instant answer!