Use inequalities to describe R in terms of its vertical and horizontal cross sections. R is the region bounded by y = x² and y = 7x. A) Vertical cross sections: $\begin{array} { c } 0 \leq y \leq 49 \ \frac { y } { 7 } \leq x \leq \sqrt { y } \end{array}$ Horizontal cross sections: $\begin{array} { c } 0 \leq x \leq 7 \ x ^ { 2 } \leq y \leq 7 x \end{array}$ B) Vertical cross sections: $\begin{array} { c } 0 \leq x \leq 7 \ x ^ { 2 } \leq y \leq 7 x \end{array}$ Horizontal cross sections: $\begin{array} { c } 0 \leq y \leq 49 \ \frac { y } { 7 } \leq x \leq \sqrt { y } \end{array}$ C) Vertical cross sections: $\begin{array} { c } 0 \leq x \leq 49 \ x ^ { 2 } \leq y \leq 7 x \end{array}$ Horizontal cross sections: $\begin{array} { c } 0 \leq y \leq 7 \ \frac { y } { 7 } \leq x \leq \sqrt { y } \end{array}$ D) Vertical cross sections: $\begin{array} { c } 0 \leq y \leq 7 \ \frac { y } { 7 } \leq x \leq \sqrt { y } \end{array}$ Horizontal cross sections: $\begin{array} { c } 0 \leq x \leq 49 \ x ^ { 2 } \leq y \leq 7 x \end{array}$

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The region R is bounded by $y = x^2$ and $y = 7x$. For vertical cross sections, $x$ ranges from 0 to 7 (the roots of the equation $x^2 = 7x$), and $y$ is between $x^2$ and $7x$. For horizontal cross sections, $y$ ranges from 0 to 49 (the maximum value of $y$ when $x = 7$), and $x$ is between $\frac{y}{7}$ and $\sqrt{y}$, corresponding to the inverse functions of $y = 7x$ and $y = x^2$, respectively.

Use Inequalities to Describe R in Terms of Its Vertical 0≤y≤49y7≤x≤y\begin{array} { c } 0 \leq y \leq 49 \\\frac { y } { 7 } \leq x \leq \sqrt { y }\end{array}0≤y≤497y​≤x≤y​​

Use Inequalities to Describe R in Terms of Its Vertical $\begin{array} { c } 0 \leq y \leq 49 \\\frac { y } { 7 } \leq x \leq \sqrt { y }\end{array}$