exam Maths Puzzle Numerical Ability

Sovle the pairs of equations using the substitituion method.

x - y = 26

3x - 8y = 3

So far I have: 3(26 + y) - 8y = 3 69y - 8y = 3

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exam Other Question

Alyssa's earnings for t hours can be described by the equation: e=7.5t
IF the graph of Alyssa's earnings and hours were put on the same coordinate plane as Mariah's where would it cos^2xcos^2y+sin^2xsin^2y+sin^2xcos^2y+sin^2ycos^2x=1