300=15x
x=20 weeks
The third equation
w=20 weeks
A function is decreasing if, reading from left to right, we can see that the graph of the function goes down.
Here we can't see the graph, but we have a brief description.
"the graph goes up until it reaches a maximum at (0, 5), then the graph reaches a relative minimum at (1, 4), then it goes up again"
Now, the graph was going up until it reached the maximum, so at that point, the graph starts going down.
The graph will go downwards until it reaches the minimum, at that point the graph starts increasing again.
So the graph only goes down between x = 0 and x = 1.
we can conclude that the interval on which the given function is decreasing is [0, 1]
If you want to learn more, you can read:
brainly.com/question/21287583
Answer:
r = 3
Step-by-step explanation:
Slope of a line passing through two points 
and 
is given by the formula,
Slope 'm' = 
Slope of a line passing through (4, 2) and (r, -6) is 8.
8 = 
8(4 - r) = 8
4 - r = 1
r = 4 - 1
r = 3
Answer:
The answer for Factorization is (x+6)(x-2) = 0 or Solving for x is 2 and -6.
Step-by-step explanation:
x² - 12 = -4x
Factorisation :
x² + 4x - 12 = 0
x² - 2x + 6x - 12 = 0
x(x-2)x + 6(x-2) = 0
(x+6)(x-2) = 0
Solve for x :
(x+6)(x-2) = 0
x + 6 = 0
x = -6
x - 2 = 0
x = 2
Answer: B). 38:inches
Step-by-step explanation: the two length 20 and 28 have a close range of value. So the next close range of value is the 38 inch which will make a perfect fit.
Note this rule is by trial and error method and no formula is behind it.
