F(x)=x 2

−x−1f, left parenthesis, x, right parenthesis, equals, x, squared, minus, x, minus, 1

Over which interval does fff have an average rate of change of zero?

Choose 1

c

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

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

it is c!

d

step-by-step explanation:

the two points from this line are   (0,4)   & (2,-2)

we can call

now, lets find the slope (m):

now finding b (the y intercept). this is the point at the y-axis where the line cuts the axis. looking at the graph, it is y = 4. so the point is 4. hence b = 4

the slope-intercept form is given by  

putting the points, we have:

d is the correct answer.