The corner grocery store sells bananas for $2.91 per pound. Select the stores that sell bananas at a lower unit price. Mark all that apply. Store A: $8.16 for 4 pounds Store B: $6.51 for 3 pounds Store C: $2.66 for 2 pounds Store D: $11.40 for 4 pounds

A, B, C, D (all of the above)

Step-by-step explanation:

A: 8.16/4= 2.04

B:6.51/3= 2.17

C:2.66/2= 1.33

D: 11.40/4= 2.85

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.