Answer:259
Step-by-step explanation:
Its summation of 6^i-1 for values of I = 1,2,3 and 4
= 6^0 + 6^1 +6^2 +6^3
=259
13 1/3 divided by 2 2/3
= 40/3 /8/3= 5
Hope that helps!
Answer: x > 18/7
