Solve.On a flight from Philadelphia to Detroit, an airplane flying against the wind flew at an average speed of 472 mph. On the return flight, the airplane flew with the wind at an average speed of 490 mph. What was the rate of the airplane in still air?
A. 478 mph
B. 6 mph
C. 9 mph
D. 481 mph
Answer: D
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Decide whether the statement makes sense. Explain your reasoning.In the U.S. presidential election, the candidate that wins the majority of the popular vote does not always become president.
What will be an ideal response?
Use the exponential key to find an approximation to the nearest thousandth.2.693-3.9
A. -39.06 B. 0.138 C. 0.095 D. 0.021
For the given position function, make a table of average velocities and make a conjecture about the instantaneous velocity at the indicated time. s(t) = t2 - 5 at t = 0
A. 
; instantaneous velocity is ?
B. 
; instantaneous velocity is -3.0
C. 
; instantaneous velocity is -15.0
D. 
; instantaneous velocity is -5.0
Solve the system.
A. x = 5, y = 4, z = 3 B. x = 3, y = 4, z = 5 C. x = 3, y = 5, z = 4 D. No solution