Bro just go on Symbolab and use the calculator
Answer:
![Average\ Speed = \frac{s(7) - s(2)}{5}](https://tex.z-dn.net/?f=Average%5C%20Speed%20%3D%20%5Cfrac%7Bs%287%29%20-%20s%282%29%7D%7B5%7D)
Step-by-step explanation:
Given
t = 2 to 7
Required
Find the average speed over these intervals
The function is not given; so, I'll represent the function as s(t)
When ![t = 2;](https://tex.z-dn.net/?f=t%20%3D%202%3B)
![s(t)= s(2)](https://tex.z-dn.net/?f=s%28t%29%3D%20s%282%29)
When ![t = 7](https://tex.z-dn.net/?f=t%20%3D%207)
![s(t) = s(7)](https://tex.z-dn.net/?f=s%28t%29%20%3D%20s%287%29)
![Average\ Speed = \frac{Change\ in\ Distance}{Change\ in\ Time}](https://tex.z-dn.net/?f=Average%5C%20Speed%20%3D%20%5Cfrac%7BChange%5C%20in%5C%20Distance%7D%7BChange%5C%20in%5C%20Time%7D)
This gives:
![Average\ Speed = \frac{s(7) - s(2)}{7 - 2}](https://tex.z-dn.net/?f=Average%5C%20Speed%20%3D%20%5Cfrac%7Bs%287%29%20-%20s%282%29%7D%7B7%20-%202%7D)
![Average\ Speed = \frac{s(7) - s(2)}{5}](https://tex.z-dn.net/?f=Average%5C%20Speed%20%3D%20%5Cfrac%7Bs%287%29%20-%20s%282%29%7D%7B5%7D)
Answer:
y = 27.1
Step-by-step explanation:
We have the value of x:
x = 12
and we need to find the value of y in the expression:
y = x + 15.1
as we can see by the equation, the value of y depends on the value of x.
thus, we substitute x = 12 on the previous equation:
y = 12 + 15.1
y = 27.1
the value of y is 27.1
My answer would be 2y + 9