1 YEAR = 12 months
divide: 5,031 ÷ 12 = 419.25
419 dollars and 25 cents each month
hope it helps!
Answer:

Step-by-step explanation:
Because the function is symmetric about the y-axis, using the cosine function is most appropriate.
<u>Refer to the equation for a cosine function:</u>
<u />
<u />
Amplitude: 
Period: 
Phase shift: 
Midline: 
The amplitude would be the average of the maximum and minimum y-values of the function, which would be
.
The value of
in
represents the length of the period, so since the length of the period is
, this means that
.
The phase shift,
, describes the horizontal shift of a function. Because the phase shift is
, then we can set up the equation
where we determine
.
The midline (or vertical shift),
, is the horizontal line that passes through between the maximum and minimum points, which the function oscillates. In this case, the midline would be located at the line
, therefore,
.
Putting all our information together, your final equation is:

I'm pretty sure it's a base....C.
Answer:
39
Step-by-step explanation:
Find the value of f(x) at both points
f(3) = 3(3)³ + 1 = 82
f(1) = 3(1)³ + 1 = 4
---------------------------
Average Rate of Change is just like slope
Divide the change in f(x) by the change in x
r = (82 - 4) / (3 - 1)
r = 78/2
r = 39