From the given data, it is clear that the first area model represents the fraction 
From the second area model,
Total number of regions = 6
Number of shaded regions = 2
The fraction represented by the model = 
Let's complete the expression.

The above series is a Geometric series because:
t2/t1 = t3/t2 --> 14/7 = 28/14 --> 2 = 2
and common ratio (r)=2
The for S12 we have,
S12 = a(1 - r^12) /(1-r) where, a = first term = 7
or, s12 = 7*(1 - 2^12) / (1 - 2)
= 28665
Answer:
20
Step-by-step explanation:
Combine like terms. 2x+3x=5x. Now you have 5x+5=25. Subtract 5 from 25. 5x=20. Divide both sides by 5. X=4
Answer:
32.40
Step-by-step explanation:
Hard to explain but there's the answer