Answer:
cool
Step-by-step explanation:
Answer:
y= 7^-t
Step-by-step explanation:
Equation for exponential decay:
An equation represents exponential decay if a term between 0 and 1 is elevated to the independent variable.
In this question:
First option 4 is elevated, so not exponential decay.
Second option:

, thus, the second option represents exponential decay.
4 (k+3) (k+) is the answer
Answer:
135
Step-by-step explanation:
Well 3 friends and 45 dollars each
45*3=135