Simplify the following expression by combining like terms. 2 x plus 8 x squared minus 4 x plus 5 x squared2x+8x2−4x+5x2

How do you answer this question? (step by step)

Need on this geometry question. explain how you did it.

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.