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The number of DVDs sold at Bob's store can be modeled by

the function N (t) = 4 +3 and the price per DVD can be

modeled by the function P(t) = 7 - 2 + 7.2 where t is

the number of years since 2002.

According to this model, what is the total amount of revenue

generated by Bob's DVD sales in the year 2010?

This answer is A

Step-by-step explanation:

Because the numbers of DVDs were sold but the models

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c