Simplify.
A. 6x
B. 
C. 
D. 12x
Answer: D
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Initially a city has a population of 104 thousand. Over the first 10 years the population grows exponentially at a rate of 11% per year. Over the next 10 years the population grows linearly at a rate of 33 thousand individuals per year.
?
A: Find a formula that gives the population N, in thousands, over the first 10 years.
?
B: Find a formula that describes the population from year 10 to year 20. Be careful: Year 10 corresponds to 
, not to 
.
?
C: Find a formula for a piecewise-defined function that describes the population over the 20-year period.
?
D: Make a graph of the population over the 20-year period.
?
What will be an ideal response?
Find all critical numbers for the function. State whether it leads to a local maximum, a local minimum, or neither.f(x) = -x3- 4.5x2 + 12x + 4
A. Local maximum at -4; local minimum at 1 B. Local maximum at -1; local minimum at 4 C. Local maximum at 1; local minimum at -4 D. Local maximum at 4; local minimum at -1
Find the sum.
A. 
B. - 
C. 
D. Does not exist
Refer to this figure to decide whether the statement is true or false. 
and 
are sides of ?DEA.
A. True B. False