Norma spent $13.25 on school supplies. she bought 3 binders that cost $3.75 each and some paper. which equation could be used to figure out the cost of the paper? a. 13.25 = 3.75 + n b. 13.25 = 3.75 – n c. 13.25 = 3 × 3.75 + n d. 13.25 = 3 × (3.75 + n) i suck at math ; -;

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.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or