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 increasing by 0.15 dollars per year since the value of the card is given by the equation 0.15y + 0.35. The coefficient of y in the equation represents the rate at which the value is increasing, which in this case is 0.15 dollars per year.
