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Answer:
Step-by-step explanation:
Actually, none of these represent direct proportion, because each one involves adding or subtracting an offset.
The last answer is closest to being a proportional relationship:
$1.75 per pound → Total cost = ($1.75/lb)x, where x is the number of pounds. This line would go through the origin, as it must, for the relationship to be proportional. But as soon as we add in or subtract that $1 coupon, this is no longer a proportional relationship.
Guatemalans would use milliliters because they use the metric system which is common throughout Latin America and which is basically easier to use than the Imperial system because it is all divisible by 10 whether it be millitres,litres,meters, kilometers etc.
18000 represents the price of the new car.
The value of the car in 6 years can be found by substituting 6 for the variable t, as follows:
![V = 18000(1-.12)^6\\V = 18000(0.4644)\\](https://tex.z-dn.net/?f=V%20%3D%2018000%281-.12%29%5E6%5C%5CV%20%3D%2018000%280.4644%29%5C%5C)
In 6 years, it will be worth around $8359.27.
The equation for the car worth $20000 is this:
![V = 20000(1-.15)^6\\V = 20000(0.3771)\\](https://tex.z-dn.net/?f=V%20%3D%2020000%281-.15%29%5E6%5C%5CV%20%3D%2020000%280.3771%29%5C%5C)
In 6 years, the other car will be worth $7542.99, so the car worth $18000 will have more value in 6 years.