use elimination to solve each system of equations

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• 我刚来看不懂英文的数学题.The Fabulous Footballers scored an incredible 55 points at last night's game.Interestingly,the number of field goals was I more than twice the number of touchdowns.The Fabulous Footballers earned 7 points for each touchdown and 3 points for each field goal.a.Multiple Choice;Which system of equations below best represents this situation?Explain your reasoning.Assume that 't' represents the number of touchdowns and 'f' represents the number
• use elimination to solve each system of equations
• 一道英文数学题,题目看不懂solve each system by elimintion -3x+4y=29 3x+2y=-17有人知道怎么做吗?,是把2个方程联立起来吗?
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• 1use the factor therem to factorise the following cubics as far as possible:f(x)=x(的三次方)-7x+62find a given that (x+4) is a factor of f(x)=x(的三次方)+8x^+ax+12 and hence factorise f(x) completely.3show that (x-2) is a factor of f(x)=x的三次方-4x^+x+6 and hence solve f(x)=0.4find the three solutions to each of the following equations 10x的三次方-29x^+25x-6=05the expression ax^+bx+6 has remainder 15 when divided by (x-1) and remainder 1 when divided by (x+1).find t
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