Question

Ok now this is confusing may someone help me

Answer 1

first of all, they should have spelled it aisle runner instead of isle runner...but this is math not english :P

so l=4w + 8 since the length is 8 more than 4 times the width

that means the area function would be
\[A=lw=(4w+8)w=4w^{2}+8w\]

find the rate of change of this function over the given intervals...