Answer:
T=12500-0.25y
Step-by-step explanation:
Step one:
given data
The value of the car is $12500.
let the value of the previous year be T
let the number of years be y
25% will be 0.25----this is equivalent to the gradient
The expression for the change in price can be represented linearly using the equation of a straight line,
y=mx+c
but since the price is reducing the expression becomes
y=-mx+c
Now, in this situation the expression for the cost after y years is
T=-(0.25y)+12500
rearrange
T=12500-0.25y
<u>The expression is T=12500-0.25y</u>
To calculate slope (which can be represented as the variable, m), we must use the equation for slope...
m =
Δy/Δx = (y-
)/(x-
)
We are given two points, each in format (x, y)
m = (13 - (-2)) / (-1 - 4) = 15 / -5 =
-3 (D)
Answer:
you save 11 cents per apple if you buy them at the cheaper store
Step-by-step explanation:
to find the cost per apple we divide the price by the number of apples.
quick mart: 1.17/3=0.37 and shop and save: 2.40/5=0.48
as you can see the price is cheaper at quick mart. to see how much cheaper we subtract.
0.48-0.37=0.11
Our answer is 0.11 or 11 cents.
Answer:
Probably chinese because of all of the characters?
Step-by-step explanation:
1 (a) 1:4.5 = 2:9
The fraction that are females is 2/11
1 (b) 2:9 = 150:675 (multiply both numbers by 75)
The total number of workers = 150 + 675 = 825