Answer:

Step-by-step explanation:
Given

Required
Determine 

Open bracket

Equate the equation to 0

Express 3 as 1 + 1 + 1

Collect like terms

Group each terms

Factorize (starting with the first bracket)












Express 0 as 0 + 0 + 0

By comparison



Solving for 
Take square root of both sides

Add 1 to both sides


Solving for 
Take square root of both sides

Subtract 1 from both sides


Solving for 
Take square root of both sides

Subtract 1 from both sides


Substitute the values of a, b and c in 



Answer:
3 is in
Step-by-step explanation:
With a dice right is it math I’m confused
Answer:
Step-by-step explanation:
add the z's and make both sides of the equation equal
Answer:
Step-by-step explanation:
let x represent the number of MB used in a month.
Let y represent the monthly cost of using x MB.
If we plot y on the vertical axis and x on the horizontal axis, a straight line would be formed. The slope of the straight line would be
Slope, m = (36 - 24)/(7 - 3)
m = 12/4 = $3
We would represent the linear equation in the slope - intercept form which is expressed as
y = mx + c
Where
c = y intercept
m = slope
At the y intercept, x = 0. Therefore, the y intercept is the flat monthly fee of $15. It is charged whether MB is used or not. Therefore, the linear equation is
y = 3x + 15
Or
C(x) = 3x + 15