Answer:
y=-7
Step-by-step explanation:
y-y1=m(x-x1)
y-(-7)=0(x-5)
y+7=0
y=0-7
y=-7
The apple that costs the least per pound is Apple B.
<h3>What is the least cost?</h3>
The cost per pound for each apple will be calculated as:
= Cost / Weight
Apple A:
= Cost / Weight
= 4.90 / 4
= $1.25 per pound
Apple B:
= Cost / Weight
= $1 / 10
= $0.1 per pound
Apple C:
Cost / Weight
= $0.45 / 0.5
= $0.9 per pound
Therefore, apple B is the cheapest
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ANSWER
The solution is ![(-1,9)](https://tex.z-dn.net/?f=%28-1%2C9%29)
EXPLANATION
We want to solve the simultaneous equations
![y=-3x+6---(1)](https://tex.z-dn.net/?f=y%3D-3x%2B6---%281%29)
and
.
We substitute equation (2) in to equation (1), to obtain
![9=-3x+6](https://tex.z-dn.net/?f=9%3D-3x%2B6)
This has now become a linear equation in a single variable
.
We solve for x by grouping like terms.
![9-6=-3x](https://tex.z-dn.net/?f=9-6%3D-3x)
![3=-3x](https://tex.z-dn.net/?f=3%3D-3x)
We divide through by negative 3 to get;
.
Hence, the solution is ![(-1,9)](https://tex.z-dn.net/?f=%28-1%2C9%29)
Answer:
201
Step-by-step explanation:
40+43+51+67=201