PLEASE ANSWER FAST!! Simplify: 12.9 - 2.8 - 7.2 + 9.1
17.6

-6.2

26.4

12

Could someone with number 1 and 2

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.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)