Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Evaluate using the order of operations.7(-4) + (6 - 8)2
A. -24 B. 676 C. 0 D. 32
Mathematics
Solve the problem.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 15 hr; 30 hr B. 12.5 hr; 27.5 hr C. 10 hr; 25 hr D. 25 hr; 40 hr
Mathematics
Find the limit algebraically.
(x2 - 2x + 4)
A. 12 B. 28 C. 4 D. 20
Mathematics
Solve the problem.A grassy park is 190 m by 240 m. If a square sand pit with sides of 22 m occupies the center of the park, how much area remains for grass?
A. 772 m2 B. 45,116 m2 C. 860 m2 D. 838 m2
Mathematics