Answer:
45km
Step-by-step explanation:
Given data
Average Speed= 15km/h
Time = 3 hours
Required
The distance traveled
Speed= distance/time
Distance= speed*time
Distance= 15*3
Distance= 45km
Hence the lower bound of the distance is 45km
The square root of 49 is a rations number
Answer:

Step-by-step explanation:

Here , the general rules followed are :-
i) 
ii) 
iii) 
If we imagine an x-axis as the time and y-axis as the temperature. The change in y is -5 when the change in x is 20. This ratio then is -5/20, or -1/4 when simplified. Because it is a constant non changing slope, the model can be described as linear.
Answer:
f'(x)=0
is the final answer
Step-by-step explanation:
1.Take the derivative
2.Rewrite the fraction
3.(answer)