Answer:
In general, we determine the domain of each function by looking for those values of the independent variable (usually x) which we are allowed to use. (Usually we have to avoid 0 on the bottom of a fraction, or negative values under the square root sign).
The range of a function is the spread of possible y-values (minimum y-value to maximum y-value)
Substitute different x-values into the expression for y to see what is happening. (Ask yourself: Is y always positive? Always negative? Or maybe not equal to certain values?)
Make sure you look for minimum and maximum values of y.
Draw a sketch! In math, it's very true that a picture is worth a thousand words.
Step-by-step explanation: hope this helps <3
Answer: Option B
B. 
Step-by-step explanation:
We have the following equations:
(1)
(2)
Let us call "a" the coefficient of the variable x in the first equation and call "b" the coefficient of the variable x in the second equation.
Then we must multiply the number "a" by a value z such that when adding 
the result is zero.
So
We solve the equation for z
The first equation must be multiplied by a value of
square root(negative 27) =
5.19615242 i
To find the slope you need to do the
XY XY
12 12
How many 8 can we fit in 144?
Start with 8•10=80, can’t fit another 80 so
Continue with 8•5=40 we have now 80+40=120 and we need 144 so are left 24
Finish with 8•3=24
Now we can group them
Multiplication: 8•10+8•5+8•3=144
Distributive : 8•(10+5+3)=144
So 144/8=10+5+3=18
