True
Explanation: I know stuff
B x b x b x b x b x b x b x b x b x b x b x b x b x b x b
3/5(30x - 15) = 72
18x - 9 = 72 <==== this is one
3(6x - 3) = 72 <== this is one
18x = 81 <== this is one
x = 81/18
x = 4.5 <== this is one
Answer: 258
Step-by-step explanation:
Since, the sum of GP is,

where r is the common ratio,
a is the first term,
n is the number of term,
Here, series is, 6, -12, 24, -48, _ _ _ _
Which is a GP ( Because there is common ratio in the given consecutive terms )
So, for the above series, a = 6, r =
and n = 7,
⇒ 
⇒ 
⇒ 
⇒ 
Thus, the sum of the 7 terms of the given series is 258.