To find f(4), you want to substitute x for 4 in the equation. It would look like:
f(4) = 3(4) - 6
Then, just do the math:
f(4) = 12 - 6
f(4) = 6
Hope this helps! :)
So, let's see, Amber made 3 penalty shots off 4, now, 3 out of 4 is 75% or 3/4. So she's 75% of the time effective.
Lindsay has made 4 out of 6 penalty shots, 4/6 or 2/3, that's about 66% effectiveness.
Li has made 2 out of 3 penalty shots, that's 2/3, that's about the same 66% effectiveness.
so, which fraction is highest 3/4, or 2/3 or 2/3? neverminding the percentages, let's multiply all by the LCD, let's see from 4, and 3, and 3, the LCD is 12.
so, let's multiply all of them by 12, to get rid of the denominator, to see which is highest.

notice, Amber has the higher effectiveness rate, to make it through in the penalty kick.
Step-by-step explanation:
(3х - 7y = 13)×-2
6х + y = 7
-6х +14y = -26
6х + y = 7
15y=-19
y=-19÷15=-1.26
6x+-1.26=7
6x=7+1.26
6x=8.26
x=1.37
Answer:
, 
Step-by-step explanation:
One is given the following equation:

Factor this expression:

Set the equation equal to (0), then use the zero-product property to solve for (x). The zero product property states that any number times zero equals zero. Thus, one can apply this here to solve for (x):


Inverse operations,


9
Hope this helps :)
Sum of the angles of a polygon is (n-2)*180
Each angle is (n-2)*180/n
140 = (n-2)*180/n
140n = 180n - 360
-40n = -360
n = 9