Question

How do you simplify (−x2+9x−2)−(9x2−4x+4)?

Answer 1

Apartment A rents for $600 per month and includes heat and electric. Apartment B rents for $400 per month but heat and electric are not included. Electric averages $40 per month. Heat costs for last year totaled $800. Which apartment is cheaper? a) Apartment A b) Apartment B c) Can't Tell

Answer 2

$(- 2x + 9x - 2) - (18 - 4x + 4) \\ 7x - 2 - 18 + 4x - 4 \\ 11x - 24$