Write a recursive and explicit formula for the following sequences -4, -8, -16, -32...

Recursive:
Explicit:

320, 80, 20, 5...

Recursive:
Explicit:
Find the 7th term:

10, 40, 70, 100...

Recursive:
Explicit:

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]