Solve.In a track meet, Sean runs 800 meters in 121.0 seconds. What was his average speed in meters per second? (Round to the nearest tenth.)
A. 0.2 m/s
B. 1.5 m/s
C. 66.1 m/s
D. 6.6 m/s
Answer: D
Mathematics
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Perform the matrix operation.Let A =
and B = 
. Find 3A + B.
A. 
B. 
C. 
D. 
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Find the sum.
A. 173.155 B. 173.145 C. 173.045 D. 173.055
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Solve the exponential equation.20x = 209
A. 20 B. 180 C. -9 D. 9
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