Prove that: \left ( a+ 2b+3c)^{2}\leq 14\left ( a^{2}+b^{2}+c^{^{2}})

Which of the following is the result of expanding

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function