Which action requires the use of the second function button on the Texas Instruments TI-30XIIS calculator? a. LOG b. MEMVAR c. RCL STO d. STO

The second function button on the Texas Instruments TI-30XIIS calculator is generally used to access functions that are printed above the keys. For example, to calculate logarithms (LOG), you would press the second function button followed by the LOG key. This allows you to access advanced functions without needing dedicated buttons for each one, making calculations more versatile and efficient. In contrast, functions like MEMVAR, RCL, and STO relate primarily to memory operations, which are typically accessed directly without needing the second function. So, if you're looking to dive into logarithmic calculations, press that second function button first for a smooth math adventure!