If e^-3 ≈ 0.0498, which equation is also true?

a: ln(-3) ≈ 0.0498
b: ln(0.0498) ≈ -3
c: ln(e) ≈ 0.0498
d: ln (-3) ≈ e

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%