Complete Question
The complete question is shown on the first uploaded
Answer:
is not a solution of the differential equation
is not a solution of the differential equation
is not a solution of the differential equation
Step-by-step explanation:
The differential equation given is 
Let consider the first equation to substitute



So


So

This means that
is not a solution of the differential equation
Let consider the second equation to substitute



So

So

This means that
is not a solution of the differential equation
Let consider the third equation to substitute



So

So
This means that
is not a solution of the differential equation
Answer:
So both equations are true
Step-by-step explanation:
#4 was asking you to substitute x = 4 into both equations to see if it's the solution of the equations.
Substitute x = 4
Ritz equation
y = 30x + 20
y = 30(4) + 20
y = 120 + 20
y = 140
Smits equation:
y = 15x + 80
y = 15(4) + 80
y = 60 + 80
y = 140
Both companies charged same price $140 for 4 days
So both equations are true
Answer:
49.2 - 12.3 = 36.9
Step-by-step explanation:
Difference in Math terms means Subtract
The answer to this question is -5