Combine. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the circumference and area of a circle having the given diameter or radius. Use 3.14 for ?. Round your results to the nearest tenth.d = 6
mi
A. 20.4 mi; 20.4 mi2 B. 10.2 mi; 40.8 mi2 C. 20.4 mi; 33.2 mi2 D. 10.2 mi; 132.7 mi2
Mathematics
Use the calculator graph to find the solution set of the given equation or inequality.
? x - 4 
A. [2, 6] B. {2} C. {6} D. [6, ?)
Mathematics
Plot the complex number in the complex plane.-6 + i 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression and combine like terms.-7(5r + 4) + 2(2r + 8)
A. -31r - 12 B. -31r + 4 C. -63r D. -2r - 3
Mathematics