Alison drove to work 18 days last month for a total of 230.4 miles driven. If she has driven to work 21 days this month, how many miles has she driven? (1 point)

If Alison drove to work 18 days last month for a total of 230.4 miles driven, she drove 230.4/18 = <<230.4/18=12.8>>12.8 miles per day

If she has driven to work 21 days this month, she has driven 12.8*21 = <<12.8*21=268.8>>268.8 miles. Answer: \boxed{268.8}.