I think it would be $77.00
Answer: I think it's C
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given the geometric sequence:
5, −10, 20, −40, ...
The first term is a = 5
And the common ratio = r = -10/5 = -2
The general rule of geometric sequence is

So, the rule for the given geometric sequence is:

Answer:
1500mm
Step-by-step explanation:
Multiply the length by 1000
therefore, 1.5×1000