The Year Y When Sales Were S Million Dollars for a Particular

question 299

Multiple Choice

The year y when sales were s million dollars for a particular electronics company can be modeled by the radical equation $y = 1.2 \sqrt { s - 4 } - 6$ , where $y = 1$ represents 2010 , and so on. Describe the transformations needed to obtain the graph of this function from the graph of $y = \sqrt { s }$ .

• A) Shift 1.2 units to the right, stretch vertically by a factor of 4, and shift down by 6 units.
• B) Shift 4 units to the left, stretch vertically by a factor of 1.2, and shift down by 6 units.
• C) Shift 4 units down, stretch vertically by a factor of 1.2, and shift 6 units to the right.
• D) Shift 4 units to the right, stretch vertically by a factor of 1.2, and shift down by 6 units.

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