To determine how many children Grace needs to babysit, we can set up an inequality based on her earnings.
Grace's total earnings can be represented as:
\[ 50 + 5x \]
where \( x \) is the number of children she babysits. She wants to make at least $63, which means her total earnings must be greater than or equal to 63.
The inequality that represents this situation is:
\[ 50 + 5x \geq 63 \]
This inequality can be used to find the minimum number of children she needs to babysit.