The value of a baseball card in dollars has been found to be 0.15y + 0.35 where y is the number of years since it was released. By how much is the baseball card's value increasing per year?
The baseball card's value is given by the function 0.15y + 0.35, where y is the number of years since it was released.
To find how much the value is increasing per year, we need to find the derivative of the function with respect to y.
Taking the derivative of 0.15y + 0.35 with respect to y gives:
d/dy (0.15y + 0.35) = 0.15
Therefore, the value of the baseball card is increasing by 0.15 dollars per year.