4y - 3 = y + 6
Add 3 to both sides
4y = y + 9
Subtract y from both sides
3y = 9
Divide both sides by 3
y= 3
Answer:
![\large\boxed{\left[\begin{array}{ccc}10&-30\\-10&-2\end{array}\right]}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D10%26-30%5C%5C-10%26-2%5Cend%7Barray%7D%5Cright%5D%7D)
Step-by-step explanation:
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Answer:
Step-by-step explanation:
B= 42
C= 48
30/4 = 7 2/4
= 7 1/2
--------------
Define
v = value after t years.
Therefore the linear model is
v = mt + c
where
m = depreciation rate
t = years since purchase
c = constant
When t=0, v = 20,000, therefore
20000 = m(0) + c
c = 20000
When t=10, v = 2000, therefore
2000 = 10m + 20000
-18000 = 10m
m = -1800
Answer:
The linear model is
v = -1800t + 20000
