Answer
$465 \text{ dollars}$
Work Step by Step
Renata receives one dollar every day. In other words, her earnings form an arithmetic progression. On the first day she has $1$ dollar and on the $30$th day she has $30$ dollars. During $30$ days she earns
$S_{30}=\frac{a_1+a_{30}}{2}\cdot 30=\frac{31}{2}\cdot 30=31\cdot15=465$$
