question_answer

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)  \[\left\{ \begin{align}   & {{t}_{1}}=2.00 \\  & {{t}_{n}}={{t}_{n-1}}+2.10 \\ \end{align} \right.\]