11. A 6-min. phone call between two cities costs $4.40, whereas a 10-min. call costs $7.60. Find the basic
charge for the first 3-min. period and the rate for
each additional minute.

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.

If a is a nonzero real number then the reciprocal of a is

Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.