Select the postulate that specifies the minimum number of points in space.

postulate 1: a line contains at least two points.
postulate 1a: a plane contains at least three points not all on one line.
postulate 1b: space contains at least four points not all on one plane.
postulate 2: through any two different points, exactly one line exists.
postulate 3: through any three points that are not one line, exactly one plane exists.
postulate 4: if two points lie in a plane, the line containing them lies in that plane.
postulate 5: if two planes intersect, then their intersection is a line.

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

Which math statement does not contain a math variable ?