exam Maths Puzzle Numerical Ability

It takes Tom 2 days to paint a house and it takes Leah 4 days and it takes Lisa 6 days. How long will it take to paint the house together?
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exam Other Question
square root of x - 1 = x - 7 On many graphing calculators [x] is denoted by int(x). Use a graphing calculator to graph the function.



g(x) = - [x]