5points 5 points plz ! ^_^

what is the product of the following expression and is its product rational or irrational? remember to simplify if possible.

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!