Answer:
a) Linear
b) Linear
c) Linear
d) Neither
See explanation below.
Step-by-step explanation:
a) 
For this case the differential equation have the following general form:

Where
and
and since n>1 we can see that is a linear differential equation.
b) 
We can rewrite the following equation on this way:

For this case the differential equation have the following general form:

Where
and
and since n=0 we can see that is a linear differential equation.
c) 
For this case we can write the differential equation on this way:

For this case the differential equation have the following general form:

Where
and
and since n=0 we can see that is a linear differential equation.
d) 
For this case we can't express the differential equation in terms:

So the is not linear, and since we can separate the variables in order to integrate is not separable. So then the answer for this one is neither.
To what place?!?! You need to have a place value to even round a number!!!
But i will guess the place value
32,879 rounded to the nearest thousand is 33,00
Answer:
506 $
Step-by-step explanation: