25 pts. stumped. Match each expression in column A with an equivalent expression from column B. Show or explain your reasoning. Column A
a. 12r+t−4r+6t
b. (12r+2t)−(4r+10t)
c. 12(r+t)−6(r+t)+4(r+t)−2(r+t)
Column B
1. 8(r−t)
2. 8(r+t)
3. 8r+7t

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Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

What is the value of x in the this question ?