#### Answer

(a) $3^{2.2}\approx 11.212$
(b) $3^{2.23}\approx 11.587$
(c) $3^{2.236}\approx 11.664$
(d) $3^{\sqrt5}\approx 11.665$

#### Work Step by Step

Use a calculator to evaluate the given expression.
Round-off answer to three decimal places.
(a) $3^{2.2}\approx 11.212$
(b) $3^{2.23}\approx 11.587$
(c) $3^{2.236}\approx 11.664$
(d) $3^{\sqrt5}\approx 11.665$