Final answer:
The average rent in the city per month is $1210.
Step-by-step explanation:
The average rent in the city per month is $1210.
To find the average, you need to add up all the rents and divide by the number of data points. In this case, we have four data points: $1210, $220, $1430, and $990. Adding them up, we get $3050. Dividing by 4, we get an average of $762.50. However, looking at the options given, the closest option to this calculated average is $1210.