Question

a submarine descended to a level 230m below the surface of the ocean. later it ascended 95m and then dove 120m. what was the new depth of the submarine?


230m -95m + 120m = ??
255m
The stock of facebook opened at $32 per share. It lost $5 that day, dropped another $3 on tuesday, but then gained $4 on wednesday and another $2 on thursday. On Friday it was unchanged. What was its closing price for the week?

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