Pls the graph represents kara's trip. which statement is true? a) between 10 and 20 minutes kara's car was stopped. b) kara's highest speed was between 30 and 35 minutes. c) kara's highest speed was between 25 and 30 minutes. d) between 5 and 10 minutes kara's speed was decreasing.

B) Kara's highest speed was between 30 and 35 minutes.

Step-by-step explanation:

A zero slope (horizontal line) means a stopped car with zero speed.

The higher the slope, the steeper the line, the higher the speed.

Let's look at the options.

a) The car was stopped between 10 and 15 minutes, not 20. False.

b) Between 30 and 35 min, the graph shows the steepest slope, so this statement is True.

c) False, since here slope is not steepest.

d) Between 5 and 10 minutes, the graph is a straight line, so speed was constant. False.

step-by-step explanation:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204