What is the solution of the system? 4x - y = -3
6x - y = -8

A. (5,5.5)
B. (-2.5, -7)
C. (-2.5, 2.2)
D. (2.5, -7)

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(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.