Answer:
70.15 ft²
Step-by-step explanation:
The figure consists of two adjacent equilateral triangles (all angles are 60 degrees and all outer edges are 9 ft).
If we focus on one of these equilateral triangles, we can get the final area by multiplying the area of that one triangle by 2.
The formula for the area of a triangle is (1/2)(base)(height).  Remembering to multiply this by 2, we get 
area of figure = (base)(height)
                                              √3
                        = (9 ft)(9 ft)(--------) = (81 ft²)(1.732) = 70.15 ft²
                                                2
 
        
             
        
        
        
C) $694.25 
Why?
Because you want to times the interest by 2 (1 is for one year but u want to find the amount after two years) then you multiply the amount given to each bank separately so:
400*0.07 (7% which is 7/100) = 28
250*0.065 (6.5% which is 65/1000) = 16.25
Then u add the interests together:
28+16.25 = 44.25
Finally you add that to the amount you started with:
$650+$44.25= $694.25
        
             
        
        
        
100/6 = 16.66 rounds to 16.7
        
             
        
        
        
Answer:
It may be Arrow diagram yes or not
 
        
                    
             
        
        
        
Take 37% as an example, just add a decimal point to the left 2 times. Decimal = .37. Fraction would be 37/100, because you cannot simplify.