Answer:
1. 15-5x 2. 54+18x 3. 3x+15 4. 28x+56
Step-by-step explanation:
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ANSWER
114.52 meters per second
EXPLANATION
We have that the car covers a distance of 5726 meters in 50 seconds.
To find the speed, we have to use the formula for speed which is:

So, the unit rate of speed of the car is:

That is the unit rate of speed of the car in meters per second.
2200(.15)=330.00
2200+330=2530
2530(.07)=177.10
2530+177.30=2707.10