In the year 2011, chris's boat had a value of $21,500 $⁢21,500 . when he bought the boat in 2007 he paid $32,000 $⁢32,000 . if the value of the boat depreciated linearly, what was the annual rate of change of the boat's value? round your answer to the nearest hundredth if necessary.

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).