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To work out the percentage increase, you need to find out the change in his weekly wage between the two years, and divide it by his original pay. You can use the formula (new-old)/old.
His new wage ...

This problem requires the use of the product rule.Let u= x-7 ; by differentiation du/dx = 1. Let v = (x-3)^2 ; by differentiation using the chain rule, dv/dx = 2(x-3)
Product Rule: dy/dx = u*...

Theorised by Albert Bandura, social learning theory states that humans learn behaviour through observational learning. Factors affecting social learning theory include attention, retention, replicability ...

(b² - 4ac)^1/2 = 0 ---> 1 root

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1) Do your research and know the mark scheme; you will be marked using the AOs (Assessment Objectives). Make sure you know what these include and how you can use them in yo...