What is the frequency of an ocean wave that is traveling at a speed of 45 m/s if it has a wavelength of 3 meters. please show work

Which of the following is the rational exponent expression of 6 root f

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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%