Answer:

Step-by-step explanation:


Add:- 
and 
So, 
Add 7 to both sides:-

Divide both sides by 11:-


<u>OAmalOHopeO</u>
To find the number of hours, divide the total distance by the speed.
Hours = 76 km / 14 km per hour
Hours = 4.529
Round the answer as needed.
Take DEBC a parralelogram
Parralel sides are DE and BC
THEREFORE,
1/2*(a+b)*h
1/2*(6+15)*h
1/2*(21)*h=0
10.5*h=0
h=-10.5
Graph will look like this if this is one of the options