Ablock of ice had a volume of 1,000 cubic inches when it started melting. 18 minutes later, the volume was 591 cubic inches. what was the average rate of change of the volume in cubic inches per minute? round to the nearest hundredth.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

cheater

step-by-step explanation: