Answer:
8.89 gallons per hour
Step-by-step explanation:
In order to find the rate of change, you need to find the slope of the graph.
To find the slope, you use equation (y2 - y1 ) / (x2 - x1)
The given coordinates are:
(0 hours, 0 gallons)
(4.5 hours, 40 gallons)
Next, plug in the x and y values into the slope equation:
y2 = 40 gallons
y1 = 0 gallons
x2 = 4.5 hours
x1 = 0 hours
Slope = (40 - 0) / (4.5 - 0) = 40 gallons / 4.5 hours = 8.888889 gallons per hour
round to 8.89
The cost of the utility pole is $707. 32
<h3>
How to determine the volume</h3>
From the information given, we have the following deductions:
- Density = 7.6 g/cm³
- Mass = Ikg = 1000g
- Cost per mass = $0. 51
Let's determine the volume of this cylinder:
Volume = mass / density
Substitute the values
Volume =
Volume = 131. 58 cm³
Thus, 131. 58 cm³ costs $0. 51
For the utility pole;
Volume = 2 πr²h
Where:
- r is 8. 8cm
- height is 750cm
Volume = 3. 142 × 8. 8 × 8. 8 × 750
Volume = 182, 487. 36 cm³
If 131. 58 cm³ costs $0. 51
Then 182, 487. 36 cm³ will cost:
= 182, 487. 36 × 0. 51/ 131. 58
= 93068. 55/ 131. 58
= $707. 32
Thus, the cost of a utility pole is $707. 32
Learn more about volume here:
brainly.com/question/10373132
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The table was being sold at $450 yesterday
-4 and 3
-4 + would = -1
-4×3 would be 12
Start by solving for the slope using y2-y1/x2-x1
4-0/-5-7
4/-12
Or -1/3
Y=MX+b
Y=-1/3x+b
Sub in one of the points for x and y to solve for b
4=-1/3(-5)+b
4=5/3+b
4-5/3=b
B=7/3
Therefore the equation is y=-1/3x+7/3
Hope this helps!