You and your family go to Chick-Fil –A for dinner. Your mom and dad both order meals. You order a meal and an ice cream cone. The ice cream cone is $1.89. Your family’s bill is $20.46. What is the cost of one meal?

$6.19

Step-by-step explanation:

We have 3 meals and 1 ice cream at 20.46

Take away the 1 ice cream to get 20.46-1.89=18.57

18.57 is the cost of 3 meals so divide it by 3 to get

18.57/3 = 6.19

6.19 per meal

Step-by-step explanation:

20.46-1.89

18.57/3

6.19+ tax

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.