$147.68 is the awnser too this one
y = 6 - 3x
x + y = 62
Since we already know the value of y, we can use substitution to find the value of x.
x + 6 - 3x = 62
<em><u>Subtract 6 from both sides.</u></em>
x - 3x = 56
<em><u>Combine like terms.</u></em>
-2x = 56
<em><u>Divide both sides by -2</u></em>
x = -28
Now that we know the value of x, we can solve for the value of y.
x + y = 62
-28 + y = 62
<em><u>Add 28 to both sides</u></em>
y = 90
The value of y is 90, and the value of x is -28 (this is your answer)
To make sure that these values are correct, we can plug them into the original equations.
y = 6 - 3x
x + y = 62
90 = 6 - 3(-28)
90 = 90 √ this is correct
-28 + 90 = 62
62 = 62 √ this is also correct
First of all we have to find the slope
y₂-y₁
--------
x₂-x₁.
2 - (-2)
------------
0 - 7
4
---
-7
this is the slope
A) When the relation is inverse, the product of the two related values is a constant. Here we have
n·c = 4·312
n·c = 1248 . . . . an equation relating n and c
You can rearrange this to
c = 1248/n
B) Using 6 for n, we have
c = 1248/6 = 208
The cost per person decreases from 312 to 208, so decreases by $104.
