18 cupcakes an 2 gallons of cupcakes cost 0.33 punch cost 2.78

$11.00

Step-by-step explanation:

(18 x 0.28) + ($2.78 x 2) = $10.6 round $10.6 to the nearest dollar and you'll get $11.00

$11.00 is the correct answer

Hope this helped!

Good luck :p

~ Emmy <3

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.