The function f(x)=x^3 describes the volume of a cube, f(x), in cubic inches, whose length, width, and height each measure x inches. If x is changing, find the instantaneous rate of change of the volume with respect to x at the moment when x =9 inches. A. 243 cubic inches per inch
B. 245.71 cubic inches per inch
C. 2,187 cubic inches per inch
D. 27 cubic inches per inch

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

answer: asdfghjkl,mnbv

step-by-step explanation:

the opening of this porabola is facing up

step-by-step explanation: