Answer:
: 5 (4x - 9) - if u wanted me to solve this or just simplifie it also im not fully confident in this im sure the second person answering this is better anyways
2: 9x + 4
3: 12 + 2x
Step-by-step explanation: correct me in comments plz bc im not confident in thisss
Ask Google OK buddy you will get some nice help or go in some special maths videos
The actual length of car is 42.857 foot
<em><u>Solution:</u></em>
Given that,
The scale of a railroad train set is 3.5 mm to 1 foot
The link of the model car in this it is 150 mm
To find: Length of actual car
Let "x" be the length of actual acr
From given,
Scale is:
3.5 mm : 1 foot
Then, given that link of the model car in this it is 150 mm
Then we get,
3.5 mm : 1 foot
150 mm : x foot
This forms a proportion and we can solve the sum by cross multiplying

Thus the actual length of car is 42.857 foot
Answer:
The discount was $25.50 off and the shoes will now cost $59.50
Step-by-step explanation: