A=Pe^rt
P=principal(starting)
E= function on calculator
r= rate
T= time (how long)
The answer is: [A]: 45x² + 81x + 36 .
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Explanation: Use "FOIL" technique: (First, Outer, Inner, and Last Terms);
then, combine the "like terms", to simplify.
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(5x+4)(9x+9) = 45x² + 45x + 36x + 35 = 45x² + 81x + 36 .
(which is answer choice: "A".).
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To find the average: the sum of the values/number of values
=250+310+275+195/4
=257.5
The answer is y=207 hope this helps
False, it's the other way around: you divide the numerator by the denominator.
For example, to evaluate 
you divide 8 by 15:
