Air is leaking from a spherical shaped balloon at the rate of 26 cubic feet per minute. If the radius of the balloon is 7 feet, how long would it take for the balloon to empty fully?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

The table respent two linear functions the equation respented by the first tables is given

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?