exam Maths Puzzle Numerical Ability

10x + 2y = 7
y = -5x + 3

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exam Other Question

Given the function h described by h(x)=x+5 find each of the following
h(0)
h(-8)
h(-3)
h(7)
h(c+14) How can you use the discriminant to write a quadratic equation that has two solutions?