A consultant charges $45 for each hour she works on a consultation, plus a flat $30 consulting fee. How many hours of work are included in a $210 bill for a consultation?

Answer 1

Let x be the number of hours worked.
The total cost of the consultation is 45x + 30 = 210.
45x = 210 - 30
45x = 180
x = 180/45
x = <<4=4>>4 hours. Answer: \boxed{4}.