Sketch an exponential function and a straight line on one set of axes from stated properties, then reflect both in the line x = 1, read an inequality off the sketch, and find the values of k for which the roots of a related equation are negative. The second question is financial: find the number of years for a simple-interest investment to reach a given value, work backwards through five years of 2,5% annual decline in a bee population, and analyse a further investment.
exponential graphsreflectionsimple interestcompound decayreading a graphroots
Open this question