The shape of a tunnel for cars can be modeled by the graph of the equation y=-0.5x(x - 8) where x and y are measured in feet. On the coordinate
plane, the ground is represented by the x-axis. How wide is the tunnel at
its base?

step-by-step explanation:

ou would have 12 of each

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.