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.

wheres graph

step-by-step explanation:

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc