HURRY: Which of the following functions is graphed above? OA f(x) = 4 * log (x + 4) OB . f(x) = 4 * log (x + 4) OC f(x) = 4 * log (- x - 4) OD f(x) = 4 * log (x + 4)

In order for the curve to move upwards from left to right as shown the log and x values need to be negatives. The curved line crosses the x axis to the right of the origin, so there needs to be a positive value added to x.

The answer is d. F(x) = -4log(-x+4)

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

step-by-step explanation: