Sarah downloads movies from a website that charges a $10 membership fee plus $1 for every movie downloaded. lisa downloads movies from a different website that charges a $5 fee per month and $2 for each movie downloaded. these equations represent this situation. y = x + 10 y = 2x + 5 in the equations, which are drawn on the graph, x represents the number of movies downloaded and y represents the money spent. sarah and lisa would spend an equal amount per month if they each downloaded how many movies?

56

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.