A triangle has an angle that measures 68∘. Which of these can be the measures of the other two angles? 112∘ and 90∘

84∘ and 42∘

54∘ and 58∘

28∘ and 152∘

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?