So first write out the expression:

take two 10's from the top to cancel with the two 10's on the bottom.
3.9/1.3 is 3.
The answer is 3*10^3
Answer: -21
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Answer:

Step-by-step explanation:

(1, 3) ⇒ x₁ = 1, y₁ = 3
(7, 2) ⇒ x₂ = 7, y₂ = 2
So the slope:

Answer:

Step-by-step explanation:
Given




Required
The rate of change (b)
The above graph is represented as:

For:
;
We have:





For
,
We have:



Substitute 

Divide by 2


<em>Hence, the rate of change is 2.50</em>
The correct answer is C. n is greater than or equal to 30