Mathematics 9709 · AS & A Level · Logarithmic and exponential functions

Logarithmic and exponential functions — practice question

(a)[2]

Sketch, on one set of axes, the graphs of $y = |3 - x|$ and $y = 9 - 2x$.

(b)[3]

Solve the inequality $|3 - x| > 9 - 2x$.

(c)[3]

Use logarithms to solve the inequality $2^{3x - 10} < 500$. Give your answer in the form $x < a$, with the value of $a$ correct to $3$ significant figures.

(d)[1]

State the integers that satisfy both of the inequalities $|3 - x| > 9 - 2x$ and $2^{3x - 10} < 500$.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Draw a V-shaped graph with its vertex on the positive $x$-axis

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