Answer:
$199.75
Step-by-step explanation:
Total money she has be x,
→ x = 1200.45 + 85
→ [ x = $1285.45 ]
Katelyn totally spend be y,
→ y = 85.70 + 1000
→ [ y = $1085.70 ]
Money left in Katelyn's account at the end of the month,
→ x - y
→ 1285.45 - 1085.70
→ $199.75
Hence, the money left is $199.75.