It's D y = x + 4, use y=mx+b
Answer:
<em>Scott will take 221 minutes to run 52 km</em>
Step-by-step explanation:
<u>Speed</u>
The speed of an object can be calculated with the formula:

Where d is the distance traveled and t is the time taken.
Scott can run d=20 km in 85 minutes. Thus, his speed is:

Now he wants to know how many minutes it will take him to run d=52 km. Solving the formula for t:

Since the speed has been already determined:

Multiplying by the reciprocal of the denominator:

t = 221 min
Scott will take 221 minutes to run 52 km
I believe the answer is between 90-100.
Hopes this helps
First add 1 to each side. It will leave you with an equation like this. 5x=3x -4
Next, subtract 3x from each side. It will leave you with an equation like this. 2x= -4
Lastly, divide each side by 2 so we can get x by itself.
ANSWER: x=-2