Answer:
$11
Step-by-step explanation:
20-9=11
>
16.8 + (-18.6)
A subtraction symbol and adding a negative are the same
145
Adjacent interior angle = x
Sum of exterior angle and adjacent interior angle = 180
35 + x = 180
x = 180 - 35
x = 145
You multiply by 6
64 * 6 = 384