The Output Is the Total Cost of a Shirt, Where $y = 1.09 x$

question 19

Multiple Choice

The output is the total cost of a shirt, where x is the price of the shirt and a sales tax of 9% of the price is added. Write an equation describing the output (y) as a function of the input (x) .

• A) \(y = 1.09 x\)
• B) \(y = x + 0.09\)
• C) \(y = x - 0.09\)
• D) \(y = 0.91 x\)
• E) \(y = 0.09 x - 1\)

Recognize the importance of planning and organizing messaging for efficiency and effectiveness.

Differentiate between personal and professional use of instant messaging.

Apply the three-step writing process to instant messages and messaging exchanges.

Discuss the disadvantages of using instant messaging systems for business.

---

Definitions:

Exponentially Depreciates

Refers to assets that lose value at a rate which accelerates over time, based on a specific formula.

Exponentially Depreciates

Exponential depreciation is a method of calculating the decrease in value of an asset at a rate which rapidly reduces its value at the beginning and slows down over time.

Piecewise Function

A mathematical function defined by multiple sub-functions, each applicable to a certain interval of the overall function's domain.

Cusp

On a graph, where two lines of a piecewise function meet.