How can you find f (3) if f (x) = - 2x^2 - 4? A) Square 3. Subtract 4 from the result, and then multiply by - 2 B) Square 3. Multiply the result by - 2, and then subtract 4 C) Multiply 3 by f D) Multiply - 2 by 3, square the result, and then subtract 4

Question

Kaitlyn Downs

Mathematics

26 December, 21:13

How can you find f (3) if f (x) = - 2x^2 - 4? A) Square 3. Subtract 4 from the result, and then multiply by - 2 B) Square 3. Multiply the result by - 2, and then subtract 4 C) Multiply 3 by f D) Multiply - 2 by 3, square the result, and then subtract 4

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Creedence · Answer 1

B

Step-by-step explanation:

By order of operations, we have to do the squaring of the 3 first. After that, we have to tackle multiplication or division, whichever we come to first in the equation. That means that we multiply the square of 3 by - 2. After we do that, all of the multiplication/division is done and we can do the addition/subtraction next which, in our case, is to subtract away 4.