Please help me with this problem.............
1 answer:
Answer:
14
Step-by-step explanation:
Given
- C=5x+4y
- x≤-2
- x≥-4
- y≥1
- y≤6
Here we are asked to find the maximum value of C
C is a sum of factors of x and y
As both the co-efficients of x and y are positive, we have to select the maximum values of both in their given ranges
(if any of their co-efficients was negative, the term whose co-efficient is negative is to be substituted with its least value in its range to get maximum value of C)
Therefore Maximum value of x=-2 and y=6
therefore C
Therefore maximum value of C=14
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Answer:
Step-by-step explanation:
see the attached figure to better understand the problem
Let
c -----> the cost of some taxi journeys
n ----> the number of miles
we know that
The graph is a line
The equation of a line in slope intercept form is
where
m is the slope
b is the c-intercept (value of c when the value of n is equal to zero)
Observing the graph we have the points
(0,2.5), (5,5.5)
<em>Find the slope</em>
The formula to calculate the slope between two points is equal to
substitute the values
we have
-----> because the point (0,2.5) is the c-intercept
substitute in the equation of slope-intercept form
