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?

3 answers

The baseball card's value is increasing by 0.20 dollars per year.
AAAaannndd the bot gets it wrong yet again!

the slope of the line is 0.15 -- the rate of change
Good grief :(