Answer:
a) -3 gallons per hour
b) y = -3x +14
Step-by-step explanation:
Rate of change is computed by dividing the amount of change by the interval over which it occurred.
<h3>a)</h3>
Here the amount of gas decreased from 14 to 2 gallons, so a decrease of 14-2 = 12 gallons. That occurred over a 4-hour period, so the rate of change is (-12 gallons)/(4 hours) = -3 gallons/hour.
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<h3>b)</h3>
The initial amount was 14 gallons, so the equation for the line describing remaining gas will be ...
y = -3x +14 . . . . gas in the tank after x hours
So I = Prt
I for interest charge
P for principal ($4,840)
r for rate (6%)
t for time (2 yrs)
So you would then plug the information into the equation.....
I = 4,840*.06*2
I = 580.80
So the answer to your question is $580.80 which is option B
Hope this helps! :)
Answer:
3
-3
sqrt(9)
-sqrt(9)
Step-by-step explanation:
What number multiplied by itself will give you 9
3*3 =9
-3*-3 =9
sqrt(9) * sqrt(9) = sqrt(81) = 9
-sqrt(9) * -sqrt(9) = + sqrt(81) =9
Answer: (A) -5 and (C) -3
<u>Step-by-step explanation:</u>
See attached graph. They intersect when x = -5 and when x = 3
