The average lifespan of American women has been tracked and the model for the data is f(t)= 0.2t+73, where t=0 corresponds to 1960. Explain the meaning of the y-intercept in this context.
I’ll give brainliest and 25 point please help me out.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4