Answer:
7.2224
Step-by-step explanation:
The value of the summation is given by the formula ...
Sn = (a1)(1 -r^n)/(1 -r) . . . . . where a1 is the first of n terms, and r is the common ratio.
Your sum has first term and ratio ...
a1 = 2(0.6) . . . . . summation term for n=1
r = 0.6
So the sum is ...

Then the value of the entire given expression is ...

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A calculator can help you find the value.
3*-3^2+5*-3-14
3*-9+(-15)-14
-27+-15-14
-42-14
-56
50 + 18 + (50 - 10) + (40 - 18) + 10 + 40 = 180
Answer:
8
Step-by-step explanation: