OCR C2 2012 January — Question 8

Exam BoardOCR
ModuleC2 (Core Mathematics 2)
Year2012
SessionJanuary
TopicExponential Equations & Modelling
8
  1. Use logarithms to solve the equation \(7 ^ { w - 3 } - 4 = 180\), giving your answer correct to 3 significant figures.
  2. Solve the simultaneous equations $$\log _ { 10 } x + \log _ { 10 } y = \log _ { 10 } 3 , \quad \log _ { 10 } ( 3 x + y ) = 1$$
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