exam Maths Puzzle Numerical Ability

Hi could someone please help me with this problem. Thanks.
Using coins which may have values of 1, 5, 10, 25, or 50 cents, what is the maximum number of cents you may have without

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exam Other Question

Find the domain of f(x)=7+sqrt3x+21 and express it using interval notation. i need help on dis problem:what is the x-intercept for the function y=-3x+7