Write the set { x ∣ − 2 ≤ x ≤ 5 } using interval notation

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2