PLSSS HELP MEEE ASAPP PLS IM BEGGING U AND THANK U

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.

Meee i honestly dont know what this question talking about

Three lines meet at a point. set up and solve an equation to find the value of (a) is your answer reasonable? explain how you know