Answer:
Option D
Step-by-step explanation:
Whenever we take a square root of a number the ± sign is with it like here in the question

And then x = ±4.47 which means x has two values one is +4.47 and the other is -4.47 so Option D is our answer.
Answer:
Step-by-step explanation:
y - 8 = 2(x - 2)
y - 8 = 2x - 4
y = 2x + 4
Answer:
-3 < x < -2
Step-by-step explanation:
Here, we want the interval in which g is increasing
The interval are the point in which we have an upward curve
From the given graph, we can see an upward curve at -3 < x < -2
And that is our answer
Answer: Medication in Lexi's system on day t becomes,

Step-by-step explanation:
Since we have given that
Initial amount Sofia takes of a medicine = 10 mg
Concentration in blood decreases by a factor of one half every day.
So, it becomes,

According to question, four days later, it becomes,

We have given that Lexi takes 10 mg of the same medicine.
So, it becomes,

Hence, Medication in Lexi's system on day t becomes,
