Solve the problem.
-A particular substance decays in such a way that it loses half its weight each day. How much of the substance is left after 7 days if it starts out at 32 grams?
A) $\frac { 1 } { 4 } \mathrm {~g}$
B) $\frac { 1 } { 2 } g$
C) $2 \mathrm {~g}$
D) $4 \mathrm {~g}$

Question

Quizplus · Accepted Answer

The substance loses half its weight each day, so after 7 days, only 1/128 of the original amount will be left. 1/128 of 32 grams is 1/4 gram.

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