The answer is C.
y = -3x + 2
y = -3x + 4
-3x + 2 = -3x + 4
2 ≠ 4
1600×85%=1360 I think that 1360 Tickets were sold
The domain is (-5,4). If that makes any sense, if it doesnt ill explain
is in quadrant I, so
.
is in quadrant II, so
.
Recall that for any angle
,

Then with the conditions determined above, we get

and

Now recall the compound angle formulas:




as well as the definition of tangent:

Then
1. 
2. 
3. 
4. 
5. 
6. 
7. A bit more work required here. Recall the half-angle identities:



Because
is in quadrant II, we know that
is in quadrant I. Specifically, we know
, so
. In this quadrant, we have
, so

8. 
Step-by-step explanation:
Since ∠E is right angle, its opposite side is DF and the legs are DE and EF.
<u>Pythagorean applied:</u>