F f(x) = 3x, calculate f(4).
help

Step-by-step explanation:

f(4)=3(4)=12

Hope it helps ☺️☺️

f(4) = 12

Step-by-step explanation:

To evaluate f(4), substitute x = 4 into f(x) , that is

f(4) = 3 × 4 = 12

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

answer: 12x^2+6x

step-by-step explanation:

6x does not equal 24x. hope it works!