Asalesperson earns a commission based on the number and type of vehicle sold. a person selling 6 cars and trucks earns $4800. a person selling 8 cars and 1 truck earns $4600. how much does a salesperson earn for selling 2 cars and 3 trucks ?

4800 divide by 3=1600 (2 cars 1 truck) 

4600-1600=3000 (6 cars) 

3000 divide by 3=1000 (2 cars) 

1000×2=2000 (4 cars) 

4800-2000=2800 (2 cars 3 trucks) 

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.

a. is correct