What is the fraction of 3 1/2

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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%

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)