Answer:
$3,515
Step-by-step explanation:
The computation of the catering supplies is shown below:
= Catering supplies per month + per job cost × expected number of jobs + per meal cost × expected number of meals
= $350 + $89 × 21 jobs + $9 × 144 meals
= $350 + $1,869 + $1,296
= $3,515
Since the question is asking for planning budget so we considered the expected units in terms of jobs and meals