Answer:
285 words
Step-by-step explanation:
C. Because you don't need the 0,0 is nothing so it is 121.3
Total distance travelled = (x.a + 2x -10) miles .
How to solve such time related questions?
The key concept for solving such questions is the relationship between speed, distance and time.
The relationship between them is Distance = Speed X Time
The whole trip can be divided into two parts
Part 1 :- Speed = x mph and time = a hours
∴ Distance = x .a miles
Part 2 :- Speed = x -5mph and time = 2 hours
∴ Distance =(x-5).2 = (2x -10)miles
Total distance = (x.a + 2x -10) miles
Learn more about Distances here :
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0.2 if you mean 2/10 or 2.5 if you mean 10/2
B. because anything raised to a power besides 1 isnt linear.