Is 6272 a perfect square? If not find the smallest number by which it must be divided so that the product becomes a perfect square.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.