The answer should be 65. The number be added is doubled. +4,+8, +16, +32 So 32+33=65 65+64=129
This is not middle school work
(D.) It should be a bit less than 6 quarts (5.75 / 5 & 3/4 to be exact)
Complementary angles add up to 90*. Therefore, the logical answer would be
D, 77.
The sum of a geometric sequence is:
s(n)=a(1-r^n)/(1-r) in our case:
s(n)=3(1-4^n)/(1-4)
s(n)=-(1-4^n)
s(n)=(4^n)-1 and s=1023
(4^n)-1=1023
4^n=1024
n ln4=ln1024
n=(ln1024)/(ln4)
n=5
