25 points! me with this. click on the photo and can you me answer #4 i do not get what it means. if you can also show your work !

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

Step-by-step explanation:

It is a bit ambiguous. I'm assuming that what they want you to do is to substitute

y = 140

x = 4  

Into the two equations that went into making the answer of 4 come up

y = 30x + 20

y = 30*4 + 20

y = 120 + 20

y = 140 which is in agreement with your answer

y = 15x + 80

y = 15*4 + 80

y = 60 + 80

y = 140

Conclusion

both equations give the same answer. Both equations are correct.

step-by-step explanation:

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.