Answer:
c2?
Step-by-step explanation:
If

then

The ODE in terms of these series is



We can solve the recurrence exactly by substitution:


So the ODE has solution

which you may recognize as the power series of the exponential function. Then

Answer:
c
the total number of marbles are 12 and there are 3 colours so you divide 12 by 3
C because it simplifies to 0=0 which proves that it has infinite solutions!
Answer: 14
Square both sides, getting you
2x-3=25
Add 3 to both sides
2x=28
Divide both sides by 2
x=14