Question: A materials scientist in Brazil is developing a bio-based plastic that degrades at a rate proportional to the square of the time in weeks, $ t^2 $. The degradation function is modeled as $ D(t) = kt^2 + 5t $, where $ k $ is a constant. If after 3 weeks, the degradation is measured at 48 grams, what is the value of $ k $? - Appfinity Technologies