Monti noticed a pattern on his cell phone bill when he read his text messaging charges. |
Which recursive definition describes Monti's text messaging charges? |
Cost |
Rs. 2.00 |
Rs. 2.10 |
Rs. 2.20 |
Rs. 2.30 |
A) \[\left\{ \begin{align} & {{t}_{1}}=2.10 \\ & {{t}_{n}}={{t}_{n-1}}-0.10 \\ \end{align} \right.\]
B) \[\left\{ \begin{align} & {{t}_{1}}=2.00 \\ & {{t}_{n}}={{t}_{n-1}}+0.10 \\ \end{align} \right.\]
C) \[\left\{ \begin{align} & {{t}_{1}}=2.10 \\ & {{t}_{n}}={{t}_{n-1}}-2.00 \\ \end{align} \right.\]
D) \[\left\{ \begin{align} & {{t}_{1}}=2.00 \\ & {{t}_{n}}={{t}_{n-1}}+2.10 \\ \end{align} \right.\]
Correct Answer: B
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