The amount of radioactive material that would remain by the 7th hour of decay is 0.12 grams.
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Exponential function</h3>
An exponential function is in the form:
y = abˣ
where y,x are variables, a is the initial value and b is the multiplicative factor.
Let y represent the amount of substance remaining after x hours. Hence:
a = 9375, at x = 4, y = 15:
15 = 9375(b)⁴
b = 0.2
y = 9375(0.2)ˣ
For the 7th hour, x = 7:
y = 9375(0.2)⁷ = 0.12
The amount of radioactive material that would remain by the 7th hour of decay is 0.12 grams.
Find out more on Exponential function at: brainly.com/question/12940982
Answer:
Step-by-step explanation:
Let's go:
Solution #1:
x - 3 = 5
x = 5 + 3
x = 8
Solution #2:
x - 3 = - 5
x = - 5 + 3
x = - 2
I hope I helped you.
Answer:
24
Step-by-step explanation:
= 49 because any number squared is positive.
Since b=2,
2(-4)= -8.
Then this is 49-8-17, which equals 24.
It’s a I did this like 2 days ago
