I <em>think</em> the correct answer is A, but please do not be upset with me if it is incorrect.
Answer:
A Linear Expression is the correct choice for this equation
Answer:
0.5
Step-by-step explanation:
the first significant figure is the non zero
Answer:
120°; 240°
Step-by-step explanation:
Let's first solve for 
: 
At this point it's just a matter of drawing a circle, and mark where the angle is(please excuse my paint skills, but free hand drawing would be even worse). Red line, is 
on the cosines, and both the green and blue lines are valid solutions. The green line is a quarter of a circle, plus 30°, or 120°. The blue one is 3/4 of a circle, minus 30 degrees, or 240°.
The answer is -148≤ F≤ -103!
