Answer:
+ 2
Step-by-step explanation:
x | y
0 | -4
1 | -2
2 | 0
You are adding 2 to y every time you have a new x.
x=3 and y=2 because 6+6 = 12 and 2 times 3 is 6 :)
Answer: It will take 
of an hour to complete the test.
Step-by-step explanation:
We need to convert the mixed number 
to an improper fraction:
Now, we need to make the following add the fractions in order to calculate how many hours will it take to complete the test. Then, we get:
Therefore, it will take of an hour to complete the test.
Answer:
Step-by-step explanation:
4= 0 degree
2z= 1 degree
4r^2st^3= 6 degree
3xyz^2= 4 degree
Step-by-step explanation:
Given
(2x + 3 )² - (2x + 3) (x - 5)
= 4x² + 6x + 9 - ( 2x (x - 5) + 3(x - 5 ))
= 4x² + 6x + 9 - ( 2x² - 10x + 3x - 15 )
= 4x² + 6x + 9 - 2x² + 10x - 3x + 15
= 2x² + 13x + 24
Hope it will help :)
