Solve the problem.In a practice run, a race car driver's speed is clocked at 139.233 mph at the end of her first lap, and at 161.636 mph at the end of the next lap. How much faster was she driving at the end of the second lap?
A. 22.303 mph
B. 22.413 mph
C. 23.403 mph
D. 22.403 mph
Answer: D
Mathematics
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Factor the sum or difference of two cubes.729y3z - z
A. z(9y - 1)(81y2 + 1) B. z(9y + 1)(81y2 - 9y + 1) C. z(729y - 1)(y2 + 9y + 1) D. z(9y - 1)(81y2 + 9y + 1)
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Evaluate the expression according to the order of operations.23 ? 32
A. 17 B. 72 C. 36 D. 7776
Mathematics
Find the intersection of the given intervals.(-?, 10) ? [-5, 16)
A. (-?, 16) B. (-?, -5] C. [-5, 10) D. (10, 16)
Mathematics
Find the sum of the geometric series.
Express the answer as a fraction.
A. 
B. 
C. 8857
D. 
Mathematics