book Maths Puzzle Numerical Ability

Evaluate the function for the value specified - you need to arrive at a final numerical answer for each part. f(x) = x2 - 7x + 10
Find:
a) f (0)

b) f (5

c) f (-2)

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book Other Question

Two machines are turned on at 8 AM. If one can produce 41 items each hour and the other can produce 50 items each hour, at that time will they produce a total of 182 items? i need help on solving this:-2x+3y=-14
2x+2y=4 solve for x and y