Solve the problem.The ocean surface is at 0 ft elevation. A diver is underwater at an elevation of -110 ft near a rock formation. In this area, the ocean floor has an elevation of -381 ft. The rock formation rises to a peak 180 ft above the ocean floor. How many feet above the top of the rock formation is the diver?
A. 271 ft
B. 91 ft
C. 201 ft
D. 70 ft
Answer: B
Mathematics
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Use the formula for 
to solve.To win the lottery in a certain state, one must correctly select 6 numbers from a collection of 52 numbers (one through 52). The order in which the selections is made does not matter. How many different selections are possible?
A. 20,358,520 B. 312 C. 18,009,460 D. 720
Mathematics
Simplify the expression.
?
?
A. 
B. 
C. 0
D. 
E. 
Mathematics
Solve the equation by making an appropriate substitution.(x - 5)2 + 2(x - 5) - 8 = 0
A. {-7, -1} B. {1, 7} C. {-9, -3} D. {3, 9}
Mathematics
Evaluate.
? 
A. 336 B. -672 C. -336 D. 672
Mathematics