Is a dilation of 1/2 similar to a 180° clockwise rotation but not congruent?

What is the binomial expansion of (2x-3)^5

Ineed me i stuck and i don’t want to get it wrong

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%