Solve the equation on the interval [0, 2?).sin 4x = 
A. 0, 
, ?
B. 
, 
C. 
, 
, 
, 
, 
, 
, 
, 
D. 0
Answer: C
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Identify the equation as either an identity or not.tan (A + 2?) = -tan A
A. Identity B. Not an identity
Solve the problem.A railroad tunnel is shaped like a semiellipse. The height of the tunnel at the center is 25 ft and the vertical clearance must be 
at a point 
from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
One mole of gas expands isothermally to double its volume. If the gas temperature is 360K, what energy is absorbed? ?
A. 396 joules B. 147 joules C. 2,287 joules D. 2,075 joules E. 3,327 joules
For the polynomial function find the following: (i) Degree of the polynomial; (ii) All x intercepts; (iii) The y intercept.y = (x + 4)(x + 2)(x + 1)
A. (i) 3 (ii) 4, 2, 1 (iii) 8 B. (i) 3 (ii) -4, -2, -1 (iii) -2 C. (i) 3 (ii) -4, -2, -1 (iii) 8 D. (i) 3 (ii) 4, 2, 1 (iii) 2