## Calculus 8th Edition

(a) $2$ species of bat (b) $334$ $m^2$
(a) If $A = 60$, then: $S = 0.7A^{0.3}=0.7(60)^{0.3} = 2.390800925 \approx 2$ (b) If $S =4$ then: $4 = 0.7A^{0.3}$ $\frac{4}{0.7}= A^{0.3}$ $A =( \frac{4}{0.7})^{\frac{10}{3}} \approx 334$