What is the axis of symmetry for the function f(x)=7−4x+x2? edgunity

x=2

Step-by-step explanation:

f(x)=7−4x+x^2

Rewriting as

   = x^2 -4x+7

 a =1  b -4  c=7

The axis of symmetry is

h = -b/2a

  = -(-4)/ 2(1) = 4/2(1) = 4/2  =a

The axis of symmetry is x=2

If a cricket chirps 140 times in one minute the temp is 72F because 140/60 is 2.333.. which is the chirps per second. you multiply that by 15 to find the number of chirps in 15 seconds which is 35. 35+37 is 72. If the temp is 60F then you subtract 37 to find the number of chirps in 15 seconds which is 23. you do 23×4 since that will find the number of chirps in one minute, and you get 92. you do 92×5 to find the number of chirps in five minutes and get 460 chirps per minute