If f (x) = 4 - x^2and g (x) = 6x, which expression is equivalent to (g-f) (3) ?

23

Step-by-step explanation:

(g-f) (3) = g (3) - f (3)

So we need to find g (3) and f (3). Then subtract.

g (3) = 6 (3) = 18.

f (3) = 4 - (3) ^2=4-9=-5.

(g-f) (3) = g (3) - f (3) = 18 - (-5) = 18+5=23

(g-f) (3) = 23

Step-by-step explanation:

f (x) = 4-x^2

g (x) = 6x

we need to find g-f (3)

Put the value of x = 3 in g (x) and f (x) and subtract f (x) from g (x) i. e

(g-f) (3) = g (3) - f (3)

(g-f) (3) = 6 (3) - {4 - (3) ^2}

(g-f) (3) = 18 - (4-9)

(g-f) (3) = 18 - (-5)

(g-f) (3) = 18+5

(g-f) (3) = 23

so, (g-f) (3) = 23