The rate of change is the slope. You're finding the average between two points, so find the slope between them using the slope formula. It's 20.
Step-by-step explanation:

m is the slope.
plug in the numbers, and you get

Answer:
A) 10
Step-by-step explanation:
In the US, a number in scientific notation will have a mantissa (a) such that ...
1 ≤ a < 10
That is, the value of "a" must be between 1 and 10 (not including 10).
_____
<em>Comment on alternatives</em>
In other places or in particular applications (some computer programming languages), the standard form of the number may be a×10^n with ...
0.1 ≤ a < 1
In engineering use, the form of the number is often chosen so that "n" is a multiple of 3, and "a" is in the range ...
1 ≤ a < 1000
This makes it easier to identify and use the appropriate standard SI prefix: nano-, micro-, milli-, kilo-, mega-, giga-, and so on.
Subtract the admission fee you have 15 dollars left then you divide 15 by 0.50 and you should get 30.(she will be able to get on 30 rides )
Use the subusitution method for r
g(4)=25-3(4)
g(4)= 25-12
g(4)= 13
Answer is g(4)= 13
Answer: jet travels a total of 2000 km in total
Step-by-step explanation: