For f(x) = x^2+5 and g(x)= x^2- 4, find the following functions. a. (fog)(x); b. (gof)(x); c. (fog)(3); d. (gof)(3)

Which inequality has a dashed boundary line when graphed ?

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?

Abarge can safely haul no more than 400 tons across the river. the barge has an empty weight of 24 tons. the average weight of the railroad cars is 4 tons each.bhow many railroad cars can the barge haul?