exam Maths Puzzle Numerical Ability

Given: f(x)=3x-5 and g(x)=-5x+2

1. Find f[g(-1)]
2. Find g[f(4)]

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exam Other Question

If P = 7y + 2xy - 6x and Q = 5 - 7y, find the value of 3P - 4Q. This is from a worksheet: Solve the inequality:

8x - 9 (divided by -4) < - 23 (divided by 8)