Subtract. Simplify, if possible.
- 
A. 
B. - 
C. 
D. 0
Answer: C
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Determine if the equation is an identity.sin(x + y) - sin(x - y) = 2 cos x sin y
A. Identity B. Not an identity
For the pair of functions, find the indicated domain.f(x) = 2x - 5, g(x) = 
Find the domain of g ? f.
A. (-6, 6) B. [6, ?) C. [-?,-0.5) D. [-0.5, ?)
Solve the problem.
The graph shows the amount of water in a 200-gallon tank after x minutes have elapsed. (i) Is the water entering or leaving the tank? (ii) Find the x-intercept and the y-intercept.
A. Entering; x-intercept is 200 and y-intercept is 0 B. Leaving; x-intercept is 0 and y-intercept is 200 C. Leaving; both intercepts are 0 D. Entering; both intercepts are 0
Simplify the expression using the order of operations.(80 + 42) ÷ 2 ? 22
A. 12 B. 192 C. 82 D. 112