Evaluate 3f(2) what is it

What could explain what happened when the time was equal to 120 minutes

X-intercept=-5 y-intercept=2 the equation of the line is

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.