Rational Function 5 . Find the domain for f(x) =- 2x2 - 3x+ 1 (x -2)(x+ 3) . Show your work (Hint: the denominator of the fraction cannot be 0). For problems 6 - 9, use the functions f(x) =-2x2 + 3x -1 and h(x) =2x3 -x2 +4. Show all steps. 6 . f (- 1) = 7 . h ( 2 ) = 8. f(1) + h(1) = 9 . h ( 3 ) - f ( - 2 ) = 10. A bank charges a flat fee of $3 per month and 25 cents for each check that is written. Write a function for the monthly cost of having an account at this bank in terms of the number of checks you write. (Note: money should be represented with the same unit) Page 2 of 4