5. A certain type of glass is such that a slab 1 inch thick absorbs one- quarter of the light which starts to pass through it. How thin must a pane be made to absorb only 1 percent of the light? a) Solve =34 dA(t) dt =-kA(t) with the given conditions A(0) = 1 and A(1) b) Once the mathematical model A(t) has been found, solve .99 = A(t) for the thickness t.