Use Mathematical Models Involving Linear Inequalities
-A Woman Works Out $x$

question 175

Multiple Choice

Use Mathematical Models Involving Linear Inequalities
-A woman works out by running and swimming. When she runs, she burns 7 calories per minute. When she swims, she burns 10 calories per minute. She wants to burn at least 490 calories in her workout.
Graph an inequality that describes the situation. Let $x$ represent the number of minutes running and $y$ the number of minutes swimming. Because $x$ and $y$ must be positive, limit the graph to quadrant I only.

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Definitions:

Primary Xylem

The first-formed xylem in a plant, responsible for water and mineral transportation, and it contributes to the plant's structural support.

Bulb

is a plant organ of perennation, consisting of a short stem with fleshy leaves or leaf bases that function as food storage during dormancy.

Root Hairs

Small hair-like outgrowths from a plant root that increase the surface area for water and nutrient absorption.

Endodermis

The innermost layer of cells in the root cortex that regulates the transfer of water and nutrients from the soil into the vascular system of plants.