Ruby plans to make 3 quilts per month until she makes 15 quilts. she figures this will take 15 month.

which is not a reason why this conclusion is wrong?

But here she figures that this will take 15 months. This conclusion is wrong because she makes 3 quilts per month only and she makes 15 quilts. Then it will take only 5 months

Step-by-step explanation:

No of quilts per month = 3

She made 15 quilts  

That means the number of month she taking to make the quilts is 15 ÷ 3 = 5 month

But here she figures that this will take 15 months. This conclusion is wrong because she makes 3 quilts per month only and she makes 15 quilts, then it will take only 5 MONTHS.

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.

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24