GalacticPlunder
  • GalacticPlunder
Sarah wants to buy the car that has a better mileage rating. Cars of Company A travel 20 miles per gallon, and cars of Company B travel 14 km per liter. [1 mile = 1.6 km; 1 gallon = 3.79 liters] Part A: Which company's car should Sarah buy? Justify your answer by comparing the mileages after converting to the same units. (5 points) Part B: If 10 gallons of gas is filled in the car which gives better mileage and you went on a drive and checked on the gas used every 30 miles, describe appropriate scales on the x-axis and y-axis to graph the rate at which the car uses gas. (5 points)
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Aim: to assess which has the better mileage rating. Given:Cars of Co. A travel 20 mile/gallon. Cars of Co.B travel 14km per litre. Given: 1 mile = 1.6km; 1 gallon = 3.79 litres. Solution: since we are asked about 'mileage', lets convert Co. B to miles. Now since 1 mile = 1.6 km dividing both sides by 1.6 we get: then 0.625 miles = 1 km therefore 14km = 0.625m x 14 = 8.75 miles
GalacticPlunder
  • GalacticPlunder
Ok, so car #2 would be 8 mpg?
anonymous
  • anonymous
We now know that Co.A does 20 miles/gallon, and Co.B does 8.75miles/litre. burt we are given: 1 gallon = 3.79 litres. So, if Co. B used 1 gallon (i.e.3.79 litres), they would do 3.79 x 8.75 miles = 33.1625 miles. i.e Co.A Does 20 miles/gallon and Co.B does 33.1625 miles per gallon.

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GalacticPlunder
  • GalacticPlunder
I get it now! Thanks! Could you help me with part B?
anonymous
  • anonymous
"Gas", the american phrase for "petrol". lol
anonymous
  • anonymous
Firstly, we have already determined "the car which gives better mileage" (i.e. car from Co.B) We know it does 33.1625 miles per gallon. In part B, we are told it was filled with 10 gallons, therefore it can do 10 x 33.1625miles = 331.625 miles (shift the decimal point one place to the left to multiply by 10). so your x axis (which is miles) should go to about 340miles. And your y axis (no.of gallons) should at least be 10.
GalacticPlunder
  • GalacticPlunder
Thank you so much! Sorry this is my first question, how do I reward you?
anonymous
  • anonymous
just click on best response beside one of my answers
anonymous
  • anonymous
you got it, thanks!
GalacticPlunder
  • GalacticPlunder
No problem!
anonymous
  • anonymous
Any other problems, feel free to contact me!

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