Solve
-When Making a Telephone Call Using a Calling Card $\$ 2.90$

question 14

Multiple Choice

Solve.
-When making a telephone call using a calling card, a call lasting 6 minutes cost $\$ 2.90$ . A call lasting 15 minutes cost $\$ 6.50$ . Let $y$ be the cost of making a call lasting $x$ minutes using a calling card. Write a linear equation that models the cost of a making a call lasting $x$ minutes.

• A) \(\mathrm { y } = 0.4 \mathrm { x } + 0.5\)
• B) \(y = \frac { 5 } { 2 } x - \frac { 121 } { 10 }\)
• C) \(\mathrm { y } = - 0.4 \mathrm { x } + 5.3\)
• D) \(y = 0.4 x - 8.5\)

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Definitions:

Fidelity

The degree to which a device, system, or service accurately reproduces or represents a given condition or datum without distortion or error.

Responsibility

The obligation or duty to properly act or take care of something or someone.

Confidentiality

The ethical and legal obligation to protect individuals' private information from unauthorized access, use, or disclosure.

Justice

The moral principle of fairness and the administration of the law, ensuring that individuals receive what they are due.