Which of the following graphs represents the function y = 2 cos(x – π∕2) – 1?

B

Step-by-step explanation:

maximum value is reached if cos (x-π/2) = 1, so the maximum value y = 2-1 = 1

minimum value is reached if cos (x-π/2) = -1, so the minimum value y = -2-1 = -3

what i would say the best answer is a. 40.5

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.