a)...A rectangular page is to contain 18 square inches of print. The

margins at the top and bottom are .5 inches and on each side are 1 inch. What dimensions minimize the amount of paper used?

my answer was 8 x 4 dimention.. is it correct?

b)...Differentiate the function f(t) = (2x-5)e^3x-1

i cant solve it please if you could help in that.???