Answer:
$3250
Step-by-step explanation:
Annual rental costs per square foot are ...
$30 + 0.03·$300 = $39
Then for 1000 square feet, the annual rental cost will be ...
(1000 ft²)($39/yr/ft²) = $39000/yr
The monthly cost is 1/12 of this:
($39000/yr)/(12 mo/yr) = $39000/12 /mo = $3250/mo