exam Maths Puzzle Numerical Ability Clocks and Calendars

I am trying to write a program where I must do the following:

The program will calcuate shipping charges for a given package weight, based on these rates:

Per every 500 miles

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exam Other Question

how do I find the domain of f(x)= radicalx^2 - 4 At 3pm a plane leaves London to fly to Madrid which is 1260 miles away. At 4PM a plane leaves Madrid to fly to London. The second plane flies 40 MPH faster than the first plane. If the planes pass one another at 4:30pm, what is the speed of each plane?