Subtract and simplify.
- 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the derivative of the function.r = (sec ? + tan ?)-3
A. -3(sec ? tan ? + sec2?)-4
B. -3(sec ? + tan ?)-4
C. -3(sec ? + tan ?)-4(tan2 ? + sec ? tan ?)
D. 
Mathematics
Find the slope of the tangent line at the given value of the independent variable.f(x) = 9x + 
, x = 2
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation. Write the answer in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the function.If f(x) = x2 - 2, find f(a - 2).
A. a2 - 4a + 4 B. a2 - 4 C. a2 - 4a + 2 D. a2 + 4
Mathematics