Use the power-reducing identities to rewrite the expression that does not contain trigonometric functions of power greater than 1.4 sin x cos3 x + 4 sin3 x cos x
A. 2 sin x
B. 2 cos x
C. 2 sin 2x
D. 2 cos 2x
Answer: C
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Find the function represented by the power series. 
A. 
B. - 
C. - 
D. 
A pair of similar triangles is given. Write the corresponding angles and the ratios of the corresponding sides.
A. ?A ? ?L
?B ? ?N
?C ? ?M
= 
= 
B. ?A ? ?L
?B ? ?N
?C ? ?M
= 
= 
C. ?A ? ?L
?B ? ?M
?C ? ?N
= 
= 
D. ?A ? ?L
?B ? ?M
?C ? ?N
= 
= 
Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 4 days.
A. $3200 B. $80 C. $8000 D. $32
For the given functions f and g, find the requested function and state its domain. Write the domain in interval notation.f(x) = 
; g(x) = 3x - 2;
Find 
.
A. 
(x) = 
; (-?, 0) ? (0, ?)
B. 
(x) = 
; [0, ?)
C. 
(x) = 
; (-?, 
? 
, ?)
D. 
(x) = 
; (0, 
? 
, ?)