First, solve the terms inside of the parenthesis. As a general rule, whenever you multiply two terms that have the same base, you can add their exponents.
Applying this rule, the base in the problem is 6, and the exponents are 3 and -4. The sum of 3 and -4 leaves -1. Therefore, this is one of our solutions:
When you have an exponential term raised to another exponent, you can simply multiply the exponents. In the previous solution given above, multiply -1 and -3 to get 3. Therefore our second solution is:
A whole number is a number without any fractions (or decimals), so you just have to round the number to the nearest number without any decimals, which is 127
option D recording the reaction time of participants in a study who were asked to press a button age as soon as they see a certain picture on a screen ASAP please