The average speed of a vehicle on a stretch of a route between 6 A.M. and 10 A.M. on a typical weekday is approximated by the function
?
, where 
is measured in miles per hour and 
is measured in hours, with 
corresponding to 6 A.M.
?
At what time of the morning commute is the traffic moving at the slowest rate? What is the average speed of a vehicle at that time?
?
A. time = 7 A.M. ; average speed = 50 mph
B. time = 7 A.M. ; average speed = 30 mph
C. time = 7 A.M. ; average speed = 45 mph
D. time = 7 A.M. ; average speed = 40 mph
Answer: A
You might also like to view...
Solve the problem.Write the next three "triangular" figurate numbers.
Fill in the blank(s) with the appropriate word(s).
Solve.110% of 394 is what?
A. 4334 B. 433.4 C. 43.34 D. 43,340
Determine whether the relation is a function.{(-8, -3), (-3, -5), (-1, 9), (2, -9)}
A. No B. Yes
Solve the quadratic equation by factoring.2x2 - 10x = -12
A. x = -2 or x = 3 B. x = -3 or x = -2 C. x = 2 or x = 3 D. x = -3 or x = 2