mrs blair bought a business at the start of 2007 the business was then valued at £90000 since mrs blair's takeover, the business has consistently achieved a 3% yearly increase in value. a) work out the value of the business at the start of 2018 give your answer correct to the nearest £100 + another business was valued at £170000 at the start of 2011 in 6 years the value of this business raised to £186000 this is equivalent to a yearly increase of x%. b) find the value of x. give your answer correct to 2 significant figures.