Find the exact value by using a sum or difference identity.sin (200° - 80°)
A. - 
B. 
C. - 
D. - 
Answer: B
Mathematics
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Let f(x) = -4x + 4. Find f .
a. 3 b. 2 c. 4 d.1
Mathematics
Solve the following quadratic equation using the quadratic formula. Find the exact answer. If there are no real solutions, so state.4x2 - x + 4 = 0
A. x = 
B. x = 1 ± 3
C. x = 
D. no real solution
Mathematics
Solve the problem.For h(x) = 15x2 + 37x + 7, find all values of a for which h(a) = -13.
A. 
, 
B. - 
, - 
C. - 
, - 
D. 
, 
Mathematics
Look for a pattern and then predict the general term, or nth term, an, of the sequence.3, 9, 27, 81, 243, . . .
A. an = 6n B. an = 3n C. an = 3n-1 + 2 D. an = 3 + 6(n - 1)
Mathematics