Solve for x.
-12 <-3x-15<_36

-1 > x and x > 7.

Step-by-step explanation:

-12 < -3x - 15 < -36

What we are looking at here is a comparison with -12 being the smallest value, -3x - 15 being the second smallest value, and 36 being the largest value in the sequence. What you need to do is to make the problem into two separate problems:

-12 < -3x - 15

and

-3x - 15 < -36

Then we solve the equations like so (using PEMDAS):

-12 < -3x - 15

+15            +15

3 < -3x

/-3    /-3

-1 > x   (the sign was changed the other way because when you divide by a negative it has to be flipped)

Now the other equation

-3x - 15 < -36

     +15      +15

-3x < -21

/-3     /-3

x >  7

Now we have the inequalities of -1 > x and x > 7.

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.

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.