Answer:
b
Step-by-step explanation:
The amount of radioactive material remaining after 24 hours is 92.15 kg.
<h3>
Exponential function</h3>
An exponential function is in the form:
y = abˣ
where y, x are variables, a is the initial value of y and b is the multiplier.
Let y represent the amount of the substance after t hours.
From the equation, a = 100 mg
Also, after 6 hours:

After 24 hours:
y = 100(0.9966)²⁴ = 92.15 kg
The amount of radioactive material remaining after 24 hours is 92.15 kg.
Find out more on Exponential function at: brainly.com/question/12940982
Answer: $42.75
Step-by-step explanation:
Given: A home improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour.
Since, 1 hour = 60 minutes
1/4 hour = 
If a customer rented the truck at 11:10 am and returned the truck at 1:40 pm the same day, what would his rental cost be
Time taken = 150 minutes
Since charge for first 75 minutes is fixed and charge of $4.75 for each additional 1/4 hour (15 minutes) is given by
The additional charge =![\frac{(150-75)}{15}\times4.75=23.75/tex]The total his rental cost =[tex]19+23.75=$42.75](https://tex.z-dn.net/?f=%5Cfrac%7B%28150-75%29%7D%7B15%7D%5Ctimes4.75%3D23.75%2Ftex%5D%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%3Cstrong%3EThe%20total%20his%20rental%20cost%20%3D%3C%2Fstrong%3E%5Btex%5D19%2B23.75%3D%2442.75)
Answer:
its d
Step-by-step explanation:
hope its helps
Step-by-step explanation:
total area = 99m² + 39.4m²
= 138.4m²