What graphing calculator should I use for algebra 2? TI-84 plus or TI-84 plus silver?

I'm a sophmore taking Algebra 2. (1 year ahead and I'm planning to take an AP class senior year. I'm taking biology and will be taking chemistry and physics. The syllabus for my math class says I need a TI-84 plus. There is a TI-84 plus and a TI-84 plus silver edition. What is the difference? Is it worth getting... show more I'm a sophmore taking Algebra 2. (1 year ahead and I'm planning to take an AP class senior year. I'm taking biology and will be taking chemistry and physics. The syllabus for my math class says I need a TI-84 plus. There is a TI-84 plus and a TI-84 plus silver edition. What is the difference? Is it worth getting the TI-84 plus silver or should I opt for the TI-84 plus?
Some info:
I have glasses and my vision with them is 20/40. I need a calculator that has buttons/inscriptions/writting you can see easily. The screen has to be clear.
I'm currently taking algebra 2, but I will take pre-calc, calc, biology, chemistry, and physics.

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