Solve the problem.The population p, in thousands, of one town can be approximated by 
where d is the number of years since 1985. Estimate the population of the town in the year 1990.
A. About 7
B. About 11,000
C. About 7000
D. About 15,000
Answer: C
Mathematics
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Find all the local maxima, local minima, and saddle points of the function.
A. f
= 15, saddle point; f
= 15, saddle point
B. f
= 15, saddle point
C. f
= - 45, local maximum
D. f
= 15, local minimum; f
= 15, local minimum
Mathematics
Solve the problem.Which of the lines in the picture are lines of symmetry of the given figure?
A. r and t B. Only r C. q and s D. q, r, s and t
Mathematics
Solve the system of equations algebraically for real values of x and y.
?
?
A. (3, 0), (6, 0) B. (0, 3), (9, 0) C. (0, 3), (0, 6) D. (9, 0), (6, 0) E. no solution
Mathematics
Find the coordinates of the vertex of the quadratic function.f(x) = (x + 5)2 + 9
A. (-9, 5) B. (9, -25) C. (9, -5) D. (-5, 9)
Mathematics