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Roger is going to purchase some writing instruments at the school store, where mechanical pencils cost $\$2$ and pens cost $\$1$. He can spend up to $\$8$, but not more.$\newline$Select the inequality in standard form that describes this situation. Use the given numbers and the following variables.$\newline$$x =$ the number of mechanical pencils Roger will buy$\newline$$y =$ the number of pens Roger will buy$\newline$$\newline$Choices:$\newline$(A) $2x + y \geq 8$$\newline$(B) $2x + y \leq 8$$\newline$(C) $x + 2y \leq 8$$\newline$(D) $x + 2y \geq 8$