Hi. I'm a student from France. I have some mathematic questions that i don't know to solve it

[Taylor De Laurent]

Hi.My name is Taylor. I have some mathematic questions that i don't know to solve it. So I want to consult you that is about a Arithematic and Geometric Progession questions

Question: 1.The first term of a geometric progression exceeds 8 from the second term and the sum to infinity of the geometric progression is 18. Find the common ratio and the first term of the geometric progression.

2.The 8 term of an arithmetic progression is 20 and the 7 term is four times the 3 term.Find the first term and the common difference of the progression.

I'm really sorry to bother you.But I hope you can solve this question.I would be grateful.

Thank You.