Answer:
Nina has been in her book club for 7 months.
Step-by-step explanation:
We conclude that the exponential function is:
f(x) = -1*(2)ˣ
<h3>
How to find the exponential function?</h3>
Here we know that we have an exponential function of the form:

And we know two points on the function, that are:

Then we have a system of equations to solve, which is:

From the first equation we can solve:

Replacing that in the other equation we can get:

Now that we know the value of a, we can get the value of b:

In this way, we conclude that the exponential function is:

If you want to learn more about exponential functions:
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9514 1404 393
Answer:
(5 15/20) -(2 8/20) = 3 7/20
Step-by-step explanation:
Problems in "least common denominator" are made much easier if you are familiar with your times tables.
When you compare the denominator 4 to the denominator 20, you see that ...
20 = 5 × 4
An equivalent fraction is made by multiplying by 1. Here, the version of 1 you want for the top fractions is 5/5.

Similarly, the bottom fraction has its denominator multiplied by 4 to get from 5 to 20. The equivalent fraction is found by multiplying the numerator by the same number.

Then the desired difference is ...

Perimeter add all side
area is v times the w = length
Answer:
The answer is 3/52
Step-by-step explanation: