Answer:
Step-by-step explanation:
<u>Use the law of cosines:</u>
<u>Substitute the values:</u>
A.
We have x in exponent, so it is an exponential function.
Exponent is negative, so is is an exponential decay.
-3.1, -3.5, -3.9, -3.8
66+x=180°
=180°-66°
=114°
8 square feet