exam Maths Puzzle Numerical Ability

evaluate please: 8x+7 if x=-3

simplify please: -6(2x-9)-4x+5

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PLEASE HELP!


2. Form each of the following:
• A linear equation in one variable
• A linear equation in two variables
• A quadratic equation
• A polynomial of three te
im confused on how rto wokr this sequence out
0,14, 52, 126, 248
i have tried n cubed but cannot find the answer?