Answer:
18
Step-by-step explanation:
6 friends times 5 cookies is 30 cookies in total
30 cookies minus 12 cookies already made is 18!
X=1
5=-4y+4
4y=-1
y=-1/4
x=2
10=-4y+4
4y=-6
y=-3/2
x=3
15=-4y+4
4y=-11
y=-11/4
Short Answer B
Argument
A
A will give you x = +/- 5i
x^2 + 25 = 0
x^2 = - 25 Take the square root.
sqrt(x^2) = +/- sqrt(-25)
x = +/- (5)i which is a complex number.
B
Is the answer
x^2 = 25
sqrt(x)^2 = sqrt(25)
x = +/- 5
C
Can't be factored just by looking at it. You can show that C is not true just by putting 5 into the equation
f(x) = x^2 + 10x - 25
f(5) = 25 + 10*5 - 25
f(5) = 50
C is not true.
D
D can be eliminated as C was
f(x) = x^2 - 5x - 25
f(5) = -25 ( l'll let you show this is not true). 5 is not a solution because it does not make f(x) = 0
Answer:
The option that no represent a linear function is 
Step-by-step explanation:
we know that
The graph of a linear function is a straight line
The equation of a linear function in slope intercept form is equal to

where
m is the slope
b is the y-intercept
<u><em>Verify each case</em></u>
option 1) we have

This option represent a linear function
where
m=3
b=-2
option 2) we have

This option represent a linear function
where
m=1
b=0
This option represent a linear direct variation function
option 3) we have

This option not represent a linear function
This option represent a exponential function
option 4) we have

This option represent a linear function
where
m=3
b=0
This option represent a linear direct variation function
4 1/2 divided by 2
First, change 4 1/2 to a decimal
4 1/2 = 4.5
4.5/2
Divide
4.5/2 = 2.25
2.25 is your answer
hope this helps