nook4boo
26.07.2019 •
Mathematics
What is the greatest two-digit whole number, the product of whose digits is 8?
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Ответ:
its 81.
Step-by-step explanation:
Hope it helps
Ответ:
A) Rate of change: 8$/bushel
B) 1$/bushel more
Step-by-step explanation:
A)
The rate of change of a function is defined as:
where
is the change in the y-variable
is the change in the x-variable
The rate of change of a function in a graph also corresponds to the slope of the graph.
Here we want to find the rate of change of the function for the current year, which is represented by the graph.
To have the most accurate estimate, we can take two extreme points (initial and final point of the graph), then calculate the ratio between increment in y and increment in x.
In this case:
Initial point: (0,0)
Final point: (18,144)
Therefore, the rate of change is:
So, the rate of change for the current year is 8$/bushel.
B)
To answer this part, we have to find the rate of change of the previous year, and then compare the two rates of change.
For the previous year, we can find the rate of change by taking the two extreme points from the table, which are:
(3,21)
(12,84)
Therefore, the rate of change of the previous year was:
which means 7$/bushel.
From part A, we know that for the current year it is
m = 8$/bushel
Therefore, the price of a bushel of corn for the current year is 1$ more (per bushel) than the previous year.