求！！高手！！！解决英文的数学题！！！！！！！一共5题！！！！求高手啊！！！！！！！！！！！！！！
1.BenhasfourmorethanteiceasmanyCDsasJack.Iftheyhaveatotalof31CDs,howmanyCDsdoesJackha...
1. Ben has four more than teice as many CDs as Jack . If they have a total of 31 CDs , how many CDs does Jack have ?
2. Jack wants to replace the flooring in his rectangular Kitchen . He calculates the area of the floor to be 12.8 square meters , The actual area of the floor is 13.5 square meters . What is the relative error in calculating the area of the floor , to the nearest thousandth?
3.A right triangle contains a 38° angle whose adjacent side measures 10 centimeters. What is the length of the hypotenuse , to the nearest hundredth of a centimeter ?
4.On the set of axes below , graph and label the equations y=|x| and y=3|x| for the interval -3小等于x小等于3.（要图啊！）
5.On the set of axes below , solve the following system of equations graphically and state the coordinates of all points in the solution set . y=-x²+6x-3 x+y=7.(要图） 展开
2. Jack wants to replace the flooring in his rectangular Kitchen . He calculates the area of the floor to be 12.8 square meters , The actual area of the floor is 13.5 square meters . What is the relative error in calculating the area of the floor , to the nearest thousandth?
3.A right triangle contains a 38° angle whose adjacent side measures 10 centimeters. What is the length of the hypotenuse , to the nearest hundredth of a centimeter ?
4.On the set of axes below , graph and label the equations y=|x| and y=3|x| for the interval -3小等于x小等于3.（要图啊！）
5.On the set of axes below , solve the following system of equations graphically and state the coordinates of all points in the solution set . y=-x²+6x-3 x+y=7.(要图） 展开
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