A submarine was situated 642 feet below sea level. If it ascends 250 feet, what is its new position? *
- 392 feet
- 892 feet
392 feet
892 feet
Anyone know the answer???

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.

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Simplify. 3(4+4x) (type your answer in with no spaces)