Answer: 
or (1,1)
Step-by-step explanation:
You can apply the Method of substitution.
Knowing that 
(second equation), you can substitute it into the first equation and solve for the variable y:
Now you need to substitute 
into the second equation to calculate the value of the variable x. Then:
Then, the solution is:
or (1,1)
Answer:
$2280
Step-by-step explanation:
Given: Cost of Air conditioner= $3000.
Rate of depreciation= 8%
Number of year= 3 years.
Now, finding the depreciation for 3 years.
Depreciation= 
Amount of depreciation= 
∴ Amount of depreciation in 3 years is $720.
Cost of Air conditioner after 3 years= 
⇒ Cost of Air conditioner after 3 years= 
∴ Cost of Air conditioner in 3 years is $2280.
I think it is the third and the fourth
Answer:
x = 12
Step-by-step explanation:
Exterior angles thm:
8x - 10 + 5x - 12 = 134
13x - 22 = 134
13x = 134 + 22
13x = 156
x = 12
Answer:
$1.2
Step-by-step explanation:
Given the total cost, in dollars, given by the function c(p) = 1.2p.
If p = 1
c(1) = 1.2(1)
c(1) = $1.2
If p = 2
c(2) = 1.2(2)
c(2) = $2.4
If p = 3
c(3) = 1.2(3)
c(3) = $3.6
If p = 4
c(4) = 1.2(4)
c(4) = $4.8
Common difference = c2 - c1 = c3 - c2 = c4 - c3
Common difference = 2.4 - 1.2 = 3.6 - 2.4 = 4.8 - 3.6 = 1.2
Hence the common difference is $1.2
