(1 pt} Suppose f (t) is the weight n grams) ofe solid sitting in a beaker ofweter end the solid is dissolving at e rate (in gremsfrninute} of fig) =...

How would i approach this question as i do not know what to do.

(1 pt} Suppose f (t) is the weight fin grams) ofe solid sitting in a beaker ofweter end the solid is dissolving at e rate (in gremsfrninute} of fig) = —1f{t) (5 + f”) ). If there is 3 grams ofsolid at timet = 2 minutes, use a linear approximation to estimate the solid's weight 1 second later. Amwer'. I I grams