Answer:
87.88 ft
Step-by-step explanation:
Base x height divided by 2
16.9 ft x 10.4 ft divided by 2 = 87.88 ft
hope this helps:)
The answer to this is C.54 units² .
Area=1/2 base*height
base=12
height=9
12*9=108
108/2=54
Area=54
<u>Direct Variation:</u> 

when y = 7: 
14 = 15x

<u>Inverse variation:</u> y*x = k
15 * 2 = k
30 = k
when y = 7: 7 * x = 30

A= -5 is the correct answer