Pumping 25 gallons of gas into a truck in 3 minutes or filling a bathtub with 40 gallons of water in 5 minutes

Step-by-step explanation:

To do this you have to figure each out in gallons per minute.

25/3 = 8 1/3.  This means that the gas is going into the truck at a rate of 8 1/3 gallons per minute.

40/5 = 8.  This means that the water is going into the tub at a rate of 8 gallons per minute.  

The gas is flowing into the truck faster.

2

step-by-step explanation:

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.