Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution?
2 answers:
Hi! Whenever you are asked to find the solution to a system of equations using graphing, you should look for the point of interception. First, graph the two lines given using slope intercept form.
Slope intercept form: the number by the x is the slope, and the number standing along is the y-intercept.
After you graphed the two lines, look for the point where they meet. For example, in this problem it would be (-2,3).
And you’re done! The answer to this problem is C. I hope I helped you!! :))
Slope intercept form: the number by the x is the slope, and the number standing along is the y-intercept.
After you graphed the two lines, look for the point where they meet. For example, in this problem it would be (-2,3).
And you’re done! The answer to this problem is C. I hope I helped you!! :))
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Answer:
It will take approximately 3.34 hours for the drug to decay to 90% of the original dosage
Step-by-step explanation:
As suggested, we use the formula for exponential decay:
From the given information, the half life of the drug in blood id 22 hours, so that means that it takes that number of hours to go from the initial value , to a final value equal to
. Using this information we can find the decay rate "k" by solving for this parameter in the formula, and using the natural log function to bring the exponent down:
Now we use this value for the decay rate "k" to calculate how long it would take to decay to 90% of the original dose;