国 ) Inga needs to buy enough skirting board to replace the old skirting board in her bedroom. The bedroom is Sm 20cm long and 4m 80cm wide. She buys one extra metre of skirting to allow for wastage How much skirting board will she need to buy?

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

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simplified version :

3y^2-10y^2x^4+40x^2+3y^2/2x^2