
=

equals
k = 15.6
First, simplify

to 1.2. Your problem should look like:

= 1.2
Second, multiply both sides by 13. Your problem should look like: k = 15.6, which is the answer.
Exponential growth would include, A = 20,000(1.08)^t, A=40(30), P=1700(1.07).
Decay would include, A=80(1/2)^t, A= 1600(.8), P=1700(.93)
Hope this helps.
Answer:
64 for number 1. Not sure on number 2 sorry.
Step-by-step explanation:
In order to solve you get x by itself:
5-x=12
-5 -5
-x=7
divide by negative 1