Answer:
3x^2-6x -3
Step-by-step explanation:
(2x^2-5x+1)+(x^2-x-4)
we sum all coefficient according to the exponent of the variable
2x^2-5x+1+x^2-x-4 = 3x^2-6x -3
Answer: It should be y=2x-2
Step-by-step explanation:
Length of floor = length of room = 7.5 units
Width of floor =
* Width of Room =
* 
⇒ Width of floor = 1.067 units
Answer: $6.32
Step-by-step explanation:
$79.00 x .08 = $6.32 sales tax