How many hours is 8am to 430pm with 1 hour lunch?

What is work done per unit of time? What is the LCM of 12 and 28? How many sides does a regular polygon have if each exterior angle is 2520 degrees? Is 40 a square root? What is the largest possible number that can be expressedusing exactly three 9's? What is 100 percent markup? What is the GCF of 18a 48a to the fourth? How many years does a decade consist of? What did Aristotle write about? Which letters have lateral inversion? What dose square mean in math? How do you divide 182 by 14 with base - ten blocks? What percentage is 450000000 of 10000000000? What is -9x63? How does the magic square relate to modern day life? How many 12x12 square inch tiles are need for 120 square feet? What is the product of 1.1 and 1.9 rounded to the nearest tenth? How can you use ratios and rates to solve problems in math? Bag contains 5 blue blocks and 3 red blocks and 2 yellow blocks so what is the probability that someone will draw a red block and replace it and then a draw a blue block at random? What is 4.14 repeating as a fraction?