9514 1404 393
Answer:
- $0.04 per cubic foot
- c(w) = 0.04w +80
- 3400 cubic feet
Step-by-step explanation:
(a, b) We are given two pairs of values:
(w, c) = (1900, 156) and (2600, 184)
so we can write the equation of the relationship using the 2-point form of the equation of a line.
y = (y2 -y1)/(x2 -x1)(x -x1) +y1
c = (184 -156)/(2600 -1900)(w -1900) +156 . . . . . substitute given points
c = 28/700(w -1900) +156
c(w) = 0.04w +80
The charge per cubic foot is $0.04.
__
(c) For a bill of $216, the amount of water used is ...
216 = 0.04w +80
136 = 0.04w
3400 = w
Use of 3400 cubic feet of water would lead to a bill of $216.
Answer:
do you have to expand it ?
Answer:
Step-by-step explanation:
The coordinates are (3,-1) and (-1,5)
<u><em>Finding the slope :</em></u>
Slope = 
Slope = 
Slope = 
Slope = 
<u><em>Now Finding y-intercept.</em></u>
For this, we'll take any point
Let it be (3,-1)
So,
Point = (x,y) = (3,-1)
=> x = 3, y = -1
<u><em>Putting in slope intercept form to get b</em></u>
=> 
=> -1 = (3)() + b
=> b = -1 + 
=> b = 
<u><em>Putting m and b in the slope intercept form to get the required equation of line</em></u>
=>
=> 
=>
Answer:
h<-8/3
Step-by-step explanation:
collect like terms
-10h+7h>9-1
3h>8
divide both sides of the inequality by -3 and flip the inequality sign
h<-8/3
