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Help please!? The sales tax on a new car varies directly to(or is directly proportional) the price of the car. If $1,800 in sales tax is paid for a $25,000 car. what is the purchase price of a car worth $1,600 in sales tax? Im totally lost when it comes to variations :(
 one year ago
 one year ago
Help please!? The sales tax on a new car varies directly to(or is directly proportional) the price of the car. If $1,800 in sales tax is paid for a $25,000 car. what is the purchase price of a car worth $1,600 in sales tax? Im totally lost when it comes to variations :(
 one year ago
 one year ago

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gdogthegirlBest ResponseYou've already chosen the best response.0
could you show the steps too?
 one year ago

tcarroll010Best ResponseYou've already chosen the best response.0
It's a question in proportions. 1800 is to 25000 as 1600 is to x. Are you with me so far?
 one year ago

gdogthegirlBest ResponseYou've already chosen the best response.0
but im not supposed to use proportions
 one year ago

gdogthegirlBest ResponseYou've already chosen the best response.0
its for variations like this is a direct variation
 one year ago

tcarroll010Best ResponseYou've already chosen the best response.0
"varies directly" is the same as proportions. You will use an equation like a/b = c/x.
 one year ago

tcarroll010Best ResponseYou've already chosen the best response.0
1800 = a. 25000 = b. 1600 = c. Just get x
 one year ago

li_za12Best ResponseYou've already chosen the best response.0
25000/1800 = x/1600 25000/1800 = 13.89 1800 x 13.89 = 25 1600 x 13.89 = x
 one year ago

gdogthegirlBest ResponseYou've already chosen the best response.0
the equation they gave to use to use was y=kx ^{n} \]
 one year ago

tcarroll010Best ResponseYou've already chosen the best response.0
What is your value for k?
 one year ago

gdogthegirlBest ResponseYou've already chosen the best response.0
that what i dont know
 one year ago
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