20x - 40 + 10 = 30

what does (x) equal

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

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.

What are the exclude value of mn+3m