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Mathematics 9 Online
lolokrat:

If the profit from the sale of x units of a product is P = 115x − 300 − x2, what level(s) of production will yield a profit of $1950? (Enter your answers as a comma-separated list.)

lolokrat:

got up to this point but not sure what to do next

1 attachment
Tandygirl:

𝑝 = 1 1 5 𝑥 − 3 0 0 − 1 𝑥 2

Vocaloid:

quadratic formula again. since the numbers are large I would just recommend using a calculator.

jhellai20:

I think you're supposed to add 300 on both sides instead of substracting 1950

Vocaloid:

^ politely disagree. The problem is asking for a solution to a quadratic equation. It needs to be in ax^2 + bx + c = 0 form which is why you need to subtract 1950.

lolokrat:

i tried plugging it into the quad equation but i am really confused. is the original pic i posted the wrong initial steps @vocaloid ?

lolokrat:

i figured it out! i couldnt for the life of me figure out what 2 numbers added to 115 and multiplied to be 2250 but i got it

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