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Answer: The required exponential model is 
Step-by-step explanation:
Since we have given that
Initial cases = 1804
Rate of growth = 4%
Since it is increasing exponentially,
So, it becomes,

Here, a = 1804
b = 
So, it becomes,

Hence, the required exponential model is 
Answer:
x=3, y=4. (3, 4).
Step-by-step explanation:
x+y=7
x+2y=11
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-x-y=-7
x+2y=11
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y=4
x+4=7
x=7-4
x=3
Answer:
Step-by-step explanation:
We will prove the converse of the postulate,
"If a line parallel to one side of a triangle and it intersects other two sides of the triangle, then the line will divide both the sides in the same ratio"
Segment DE intersects AB and BC at D and E respectively,
Ratio of the segments of two sides,


1.5 = 1.5
True.
Therefore, lines AC and DE are parallel.