Question 3 - A-Level Maths

Exam Board	Edexcel
Module	C12 (Core Mathematics 1 & 2)
Year	2014
Session	June
Topic	Exponential Equations & Modelling

3. Solve, giving each answer to 3 significant figures, the equations

\(4 ^ { a } = 20\)
\(3 + 2 \log _ { 2 } b = \log _ { 2 } ( 30 b )\)
(Solutions based entirely on graphical or numerical methods are not acceptable.)