If you are assigned 30 rooms to clean and you have 7 hours to complete all 30 rooms, how much time should you allow for each room?

Time taken to clean 30 rooms = 7 hours

Since, 1 hour = 60 minutes

Therefore, 7 hours = = 420 minutes

Time taken to clean 30 rooms = 420 minutes

Time taken to clean 1 room =

= 14 minutes.

Therefore, it will take 14 minutes to clean each room.

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.