Answer:

Step-by-step explanation:
To find the linear model, we need to find a linear equation, where its slope is defined as

So, we use the given points (1970, 38000) and (1990, 175000), to find the slope

Now, we use the point-slope formula to find the equation

Therefore, the linear model is

Answer : x^2 - 4x^2 - 2x^2 + 3
Answer: 3km 42n
Add 2km 35m and 1km 7m together. This will give you your answer of 3km 42n
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