Hurry pls help! Alberto and Bianca run 50km race. The illustration below the graph of the position of the two runners as a function of time. complete the following sentence based on the graph of the function.
- Early in the race,__ runs faster.
- Alberto maintains a speed of __ km/h during the first hour of the race.
- meanwhile, Bianca’s running speed __
-The first person to cross the finish line is__

80cm^2

Step-by-step explanation:

1). Increases

2). Slope = 4

3). Slope = -1

4). y = 4 when x = 5

Step-by-step explanation:

1). Initially, as x increases, y also increases. (Linear growth has been shown in the graph initially).

2). Afterward, the slope of the graph of the function is equal to 4 for all x between x = 3 and x = 5.

[Slope of the line passing through two points (3, 0) and (5, 4)

m = \frac{(y_{2}-y_{1})}{(x_{2}-x_{1})}

  = \frac{4-0}{5-3}

  = \frac{4}{1}

  = 4 ]

3). The slope of the graph is equal to -1 for x between x = 5 and x = 9.

[Slope of the line passing through two points (5, 4) and (9, 0),

Slope = \frac{(y_{2}-y_{1})}{(x_{2}-x_{1})}

         = \frac{4-0}{5-9}

         = -\frac{4}{4}

         = -1 ]

4). The greatest value of y is y = 4, and it occurs when x = 5. (From the given  graph}

a

b

d

step-by-step explanation: