How many numbers are less than 1000 that contain only the digits 5 or 6 or both 5 or 6? A digit may be used more than once.
1 answer:
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Step-by-step explanation:
Given the table:
Month f(x) = Number of imports g(x) = Number of exports
January (1) 3 1
February (2) 4 3
March (3) 5 5
April (4) 6 7
From the table, it is clear that:
Number of imports = number of month + 2
so
also
Number of exports = 2(number of month) + 1
so
Therefore, number of imports equals the number of month plus one. i.e. , which is a linear function.
If we compare it with slope-intercept form of the line
Then,
slope = m = 1
y-intercept = 2
Also number of exports equals is also a linear function.
i.e.
Here,
slope = m = 2
y-intercept = -1