Consider the following functions. Perform the operations to determine the values of a, b, c, d, and e. f(x)=(x^2+7x-12) and g(x)=(x^2-9x+1) f(x)•g(x)=ax^4-bx^3-cx^2+dx-e h(x)=(x^2+2) and k(x)=(2x^2-5x+7)
h(x)•k(x)=ax^4-bx^3-cx^2+dx-e

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)