The answer is A
You can solve this by equation the two equations, by substitution method or elimination. Let's choose the substitution since Equation 2 has already X isolated
-take the X in equation 2 and substitute in the first equation
So, You should have 5 (5-3/2 y) -4y =7
Get y ( I'll assume you know how to simplify and find y by yourself )
y=36/23
-Now take y and substitute it in the first equation or the second equation (it doesn't really matter)
Substituting y in Equation 2:
x=5- 3/2 (36/23)
=> x= 61/23
So answer is A where (x,y) is (61/23, 36/23)
Yes, because you need to remember and/or list out your square roots no matter what.
4 4/5 you make the whole number a fraction by putting a 1 under it and the multiply like normal then make it into a mixed number<span />
Answer:
A. ![(-\infty, -4]\ or\ (2,\infty)](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%20-4%5D%5C%20or%5C%20%282%2C%5Cinfty%29)
Step-by-step explanation:
Given:
The inequality is given as:

Now, consider the first inequality

Here, 'x' is less than or equal to -4. The values that are less than -4 are -5, -6, -7... so on. The inequality used is 'less than or equal to'. This means that -4 is included in the solution. So, we use a square bracket (closed interval) at the other end.
The inequality in notation form is thus, ![(-\infty,-4]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C-4%5D)
Now, consider the other inequality 
The values of 'x' are greater than 2. The values that are greater than 2 are 3, 4, 5... and so on. Also, 2 is not included in the solution. So, we use open interval on either side.
Therefore,
in interval notation form is 
There is a conjunction 'or' used in the inequality. Therefore, the answer is:
A. ![(-\infty, -4]\ or\ (2,\infty)](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%20-4%5D%5C%20or%5C%20%282%2C%5Cinfty%29)
The graph on the number line is shown below.
Let us say the dog eats x pounds of dog food in one month.
There are 12 months in a year.
So applying unitary method:
Quantity of dog food required by dog in 12 months = 12x
Answer : The dog requires 12x pounds of dog food in a year.