#### Answer

(a) $45.1$
(b) $45.06$

#### Work Step by Step

Given: $45.0649$
(a) Nearest Tenth:
The tenth's digit is followed by a 6. Thus, round up the tenth's digit to $1$ and drop the the rest of the decimals to the right to obtain $45.1$
(b) Nearest Hundredth
The hundredth's digit is followed by a 4. Thus, retain the hundredth's digit and drop the the rest of the decimals to the right to obtain $45.06$