Please help! I will give brainliest! Needed ASAP!!

step-by-step explanation:

since it tells you the equation 'y = 20x' and y is the number of gallons where as x is minutes

the independent variable = number of gallons

the dependent variable  = minutes

and the number(s) to fill in the table

x ,  y

( 0, 0 )

( 1, 20 )

( 2, 40 )

( 3, 60 )

( 4, 80 )

and the relationship between x and y is linear because you can clearly see the graph having especially a straight line that is not interfering with itself

hope this helps you! :)

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.