Plz help this is due today I need help

Step-by-step explanation:

so if you put Ln(0.99) into your calculator it gives you a negative answer. so we know that this problem will be decay.

next the answer for the above looks like   0.010050  ...   so it's 1.0% for each x

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

what is the original number? you forgot to add it.