Find the average rate of change for the function between the given values.f(x) = x2 + 8x; from 1 to 7
A. 
B. 15
C. 16
D. 
Answer: C
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Find a polar equation for the conic. A focus is at the pole.e = 1; directrix is parallel to the polar axis 4 above the pole
A. r = 
B. r = 
C. r = 
D. r = 
Solve the problem.The incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard deviation $150. What percentage of trainees earn less than $950 a month?
A. 35.31% B. 40.82% C. 90.82% D. 15.87%
The commissioner of the City of Newton Department of Public Works estimates that the number of people in the city who have been recycling their magazines in year t following the introduction of the recycling program at the beginning of 1990 is
?
?
Find the average number of people who will have recycled their magazines during the first 9 years since the program was introduced.
?
A. 38,001 B. 38,044 C. 29,214 D. 45,046
Use Cramer's rule to solve the system.11x + 3y=15x + 2y=4
A. {(- 
, 
)}
B. {(
, - 
)}
C. {(- 
, 
)}
D. {(
, 
)}