Solve
-When Making a Telephone Call Using a Calling Card $\$ 0.90$

question 15

Multiple Choice

Solve.
-When making a telephone call using a calling card, a call lasting 5 minutes cost $\$ 0.90$ . A call lasting 12 minutes cost $\$ 1.60$ . 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 making a call lasting $x$ minutes.

• A) \(y = 0.1 x + 0.4\)
• B) \(y = 10 x - \frac { 491 } { 10 }\)
• C) \(\mathrm { y } = - 0.1 \mathrm { x } + 1.4\)
• D) \(\mathrm { y } = 0.1 \mathrm { x } - 10.4\)

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