Answer:

Time for bacteria count reaching 8019: t = 2.543 hours
Step-by-step explanation:
To find the composite function N(T(t)), we just need to use the value of T(t) for each T in the function N(T). So we have that:




Now, to find the time when the bacteria count reaches 8019, we just need to use N(T(t)) = 8019 and then find the value of t:


Solving this quadratic equation, we have that t = 2.543 hours, so that is the time needed to the bacteria count reaching 8019.
It is a rational number because it is a terminated decimal and can be expressed as a fraction.
Answer:
f^(−1)(x)= x/6+4
Step-by-step explanation:
interchange the variables and solve for
y
In millimeter, that would be 60,000 :)
Answer:
x>15
Step-by-step explanation:
x-5>10
add 5 to get rid of the -5
add 5 to the other side too because you added 5 in the other side
= x>15