Answer:
779
Step-by-step explanation:
so you're going to need to find the slope. in order to do that use (y2-y1)/(x2-x1)
(7-(-2))/(0-8)
simplify
9/-8
simplify -9/8
now using y=mx+b, we need to find b. so we can plug in the coordinates of (0,7) or (8,-2). let's use (8,-2) because it involves more math.
y=mx+b
-2=(-9/8)(8)+b
multiply (-9/8) by 8 to get -9
-2=-9+b
add 9 to both sides
7=b
so our equation is now
y=-(9/8)x+7
The multiplicative inverse of 1 is in fact 1/1 which is equal to 1. So 1 is actually its own multiplicative inverse.
Answer:
![y'=33.6e^{-1.4t}](https://tex.z-dn.net/?f=y%27%3D33.6e%5E%7B-1.4t%7D)
Step-by-step explanation:
![y = 24e^{-1.4t}](https://tex.z-dn.net/?f=y%20%3D%2024e%5E%7B-1.4t%7D)
take derivative with respect to t
![\frac{dy}{dt} =24 \frac{d(e^{-1.4t})}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bdy%7D%7Bdt%7D%20%3D24%20%5Cfrac%7Bd%28e%5E%7B-1.4t%7D%29%7D%7Bdt%7D)
derivative of e^t is e^t
derivative of -1.4t is -1.4
![\frac{dy}{dt} =24 \frac{d(e^{-1.4t})}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bdy%7D%7Bdt%7D%20%3D24%20%5Cfrac%7Bd%28e%5E%7B-1.4t%7D%29%7D%7Bdt%7D)
Apply chain rule
![\frac{dy}{dt} =24(e^{-1.4t})(-1.4)](https://tex.z-dn.net/?f=%5Cfrac%7Bdy%7D%7Bdt%7D%20%3D24%28e%5E%7B-1.4t%7D%29%28-1.4%29)
![y'=33.6e^{-1.4t}](https://tex.z-dn.net/?f=y%27%3D33.6e%5E%7B-1.4t%7D)
Answer:
The necklace is 4x.
Step-by-step explanation:
If the bracelet is x and the necklace is 4 times greater you would multiply the cost of the bracelet by 4. Meaning it would be X *4= 4x (x multiplied 4 times.)