A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost C can be represented by this equation: C =
12 + a(m), where "a" is the additional charge per minute, and "m" is the number of
minutes used. Which equation can be used to find the number of minutes a
customer used if we know "a" and "C"?*

m=(c-12)/a

Step-by-step explanation:

57 732

step-by-step explanation:

i dont really.know

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.