exam Maths Puzzle Numerical Ability

YOLANDA IS MAKING STAICASE SHAPES BY USING SQUARE TILES.HOW MANY TILES WILL SHE NEED TO MAKE A STAIRCASE THAT IS 10 TILES TALL?

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exam Other Question

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

...then write your solution in interval notation if 2 hotdogs and 1 hamburger costs 3.39. and 3 hotdogs and 3 hamburgers cost 6.57, how much does a hotdog cost?