Answer:
Step-by-step explanation:
f of g of x means "function f, replace x by the value of g of x"
The equation will be of the form:
where A is the amount after t hours, and r is the decay constant.
To find the value of r, we plug the given values into the equation, giving:
Rearranging and taking natural logs of both sides, we get:
The required model is:
Y - y1 = m(x - x1)
slope(m) = -2
(3,1)....x1 = 3 and y1 = 1
now we just sub
y - 1 = -2(x - 3) <== point slope form
I think the the 3 one because they have same fraction but they just put them different like: For Example: 4/5 and now they mixed to 5/4 but there the same.
So it will be the 3 one