Polynomials/QuadraticCharacteristics Reivew

Which expression is equivalent to $$2x-\left(-5x-8\right)-\left(7x+x^2\right)$$ ?

Which expression is equivalent to $$\left(-7x^2-x-5\right)-\left(3x^2+x\right)$$ ?

The expression equivalent is ​ (a)  

Which expression is equivalent to $$\left(-6b^2-2+5b\right)+\left(-5-2b^2-5b\right)$$ ?

What is the quotient of $$\left(4k^2-14k-8\right)\ \div\left(4k+2\right)$$ ?

Which expression is equivalent to $$\left(h^2\ +\ 9h\ -\ 1\right)\left(-4h\ +\ 3\right)$$ ? ( you need to scroll on the answer choices to see all the answers choices)

Which expression is equivalent to $$\left(n-4\right)\left(2n+7\right)$$ ?

A quadratic function is graphed on the grid.

The domain of the function is represented by ​ (a)   and the range is represented by ​ ​ (b)  

A portion of a quadratic function is graphed.

What is the range of the graph?

The table contains the points of a quadratic function. What is the range of the table?

What are the domain and range of $$f\left(x\right)=\frac{1}{3}\left(x+16\right)^2-15$$ ? (Hint: Graph in Desmos and LOOK AT THE GRAPH)