Answer:
98
Step-by-step explanation:
So we have the expression:

And we want to evaluate it when x is 3 and y is 8.
So, substitute:

Multiply:

Add:

And we're done!
Answer:
1:3 for simplified
3:9 for unsimplified
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
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,

Answer:
75%
Step-by-step explanation:
Since it's saying less than 7, that tells you-you have 6 numbers less than 7. I put 6/8 which converts to 75%