What is the numeric coefficient of -x^8

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.

Through non-collinear points there is exactly one plane.

Write the equation in logarithmic form e^x=403.429