exam Maths Puzzle Numerical Ability

The number of toothpicks needed to make the nth figure is 3+3n. Show that this conjecture is false by finding a counterexample.

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exam Other Question

What does it mean to find the vertex, intercepts, and sketch of y=-x2-6x+1? Use a table of values to graph f(x) and g(x) on the same set of axes.
f(x) = 2^3x and g(x) = 8^-x
I am having difficulty with picking the x values what x values would be suitab