exam Maths Puzzle Numerical Ability

Find the domain of the function: f(x)= square root of (2x-8)

...then write your solution in interval notation

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exam Other Question

On June 1st, a school teacher signed a 2-month note for $600 at 12% to pay for a vacation. On July 1st, he paid $300 on the loan, and July 31st, he paid off the loan. What is the YOLANDA IS MAKING STAICASE SHAPES BY USING SQUARE TILES.HOW MANY TILES WILL SHE NEED TO MAKE A STAIRCASE THAT IS 10 TILES TALL?