Lurinda ordered some boxes of greating cards online the cost of the cards is $6.50n + $3 where n is the number of boxes orderd and $3 is the shippingand handleing charge how much will lurinda pay if she orders 8 boxes of cards

$55

Step-by-step explanation:

For this question you would have to multiply

6.50*8 which equals $52

Then add 3 dollars for the total 52+3=55

4

step-by-step explanation:

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.