Aused-car dealership buys a car for $2800 and then sells it for $4600. what is the percent increase?

We need to find the percent increase from 2800 to 4600.

2800 > 4600

          +?%

Well...

4600-2800 = $1800

So, the dealership profited $1800.

If we compare this with the initial price of the car...

1800/2800 = 64.3% increase from its initial price approx.

64.3% approx.

2 x^2 -3x+p

sum of roots = 3/2

let other root be x

3+ x = 3/2

x= 3/2 - 3 = -3/2

product of roots = p/2

3× -3/2 = p/2

-9 = p

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