exam Maths Puzzle Numerical Ability

I am having trouble obtain the correct answer for solving the following information:

F(x)= 2x^2 - 7x - 4

use the vertex and intercepts to sketch the graph of each quadratic f

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exam Other Question
x>5+4 or 2x<9+3
x>9 2x<12
x<12/2
x<6 Hello out there,I need help with two tough problems,the first one is,Solve:3y/2=7+y/4.And the last one is,Find the quotient:e^2-e-12/e-4,thanks to whoever can help.