Minerals: A. were once living
B. are man-made materials
C. are only found in rocks
D. naturally grow into crystals

explanation:

what image you forgot to include it.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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