Sweet Time Bakery just opened and is increasing the number of items they bake. For example, the bakery made 108 carrot cakes in December, 216 carrot cakes in January, 432 carrot cakes in February, and 864 carrot cakes in March. What kind of sequence is this?​

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?