here it is my answer
hope it is right
Answer:
Step-by-step explanation:
t2/t1=r
-10/2=-5
2*-5=-10
8m.
an = 2 an-1 means that each term in the sequence( except the first) is obtained by multiplying the last term by 2, so the first 4 terms are m, 2m, 4m, 8m.
Answer:60
