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statonglenda
16.10.2019 •
Mathematics
Find the sum of the geometric series. a{1}=88, a{5}=1408, r=-2
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Ответ:
Ответ:
Step-by-step explanation:
First, create an equation for the price of the car for both dealerships:
Dealership A: y = 150x + 2500
Dealership B: y = 125x + 3000
where y is the total cost of the car and x is the number of months that have passed.
You know that y is equal to "150x + 2500" AND y is equal to "125x + 3000," so "150x + 2500" must be equal to "125x + 3000"
Now, just solve for x to find the number of months at which the total amount paid would be the same for both dealers:
So, after 20 months, the price of the car at both dealerships is the same. To find that price, just plug in 20 for x in one of the equations (because x was the number of months):
So, the car costs the same after 20 months, $5500 at either dealership.
Step-by-step explanation: