Kindly answer this with honesty AND correctly plz I beg your pardon. Thanks

Question No. 1 Quantity demanded of Beef (QB) is a function of price of beef (PB), price of mutton (PM) and income (Y); QB = 5200-1.5PB + 2.5Py + 0.25Y Find out income elasticity of demand for beef if PB = 100, PM = 250, and Y = 5000.Question No. 2 Given the quantity demanded function; Ca = 250-3P +0.05Y find out price elasticity of demand at P = 25 and income elasticity of demand at Y = 2200