Match the solution of a system of inequalities with the correct graph.

$$\left\{\begin{array}{l}x+2 y \leq 20 \\ 3 x+2 y \leq 42 \\ x \geq 0 \\ y \geq 0\end{array}\right.$$

Find the first 6 terms of the sequence defined by f(n)=2 n+3.

Simplify the expression.

$$f^{\prime}(x)=\left(2 x^3+3 x+1\right)(2 x)+\left(x^2+4\right)\left(6 x^2+3\right)$$

Evaluate:

$$\frac{8 !}{4 ! 4 !}$$

Graph the inequality.

$$y \leq 5 x-4$$

Find the sum of the first 6 terms of the geometric sequence 9, 3, 1, ...