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**Unformatted text preview: **The charcoal from the caves is about 15,500 years old, so the paintings date back to about 13,500 BC. 3. Each of the following functions gives the amount of a substance present at time t. In each case give the amount present initially state the growth/decay factor state whether or not the function represents an exponential growth model or exponential decay model a) A = 100(1.04) t 100 is initial substance, 1.04 is growth factor, exponential growth b) A = 150(.89) t 150 is initial substance, .89 is the growth factor, exponential decay c) A = 1200(1.12) t 1000 is initial substance, 1.12 is growth factor, exponential growth 4. For each of the following functions state (a) whether exponential growth or decay is represented and (b) give the percent growth or decay rate. a) A = 22.3(1.07) t growth at 7% b) A = 10(.91) t decay at 9% c) A = 1000(.85) t decay at 15%...

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