Answer:
(a) The product of the sum of a and b and their difference.

(b) The tripled product of 6a and b².

(c) The difference of the squares of 2m and 7n.

A.450 If the balance of supplies at the start of the month was $900 then at the end of the month it was $450 so the answer would be 450.
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Answer:
66 6 I am not your friend 6
Step-by-step explanation:
You can tell that a line is parallel if the lines can go on forever without crossing or intersecting. A line is perpendicular when the lines intersect at a right angle. If the slopes are either equal or negative reciprocals, they cannot be parallel or perpendicular.
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