Solve the problem.A certain country's population P(t), in millions, t years after 1980 can be approximated by P(t) = 2.495(1.018)t .Find the doubling time. Round your answer to the nearest tenth.
A. 51.2 yr
B. 38.9 yr
C. 61.6 yr
D. 77.7 yr
Answer: B
Mathematics
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Find the area of the specified region.Inside the circle r = 6 and to the right of the line r = 3 sec ?
A. 3(4? - 3
)
B. 6(2? - 3
)
C. 3(2? + 3
)
D. 6?
Mathematics
Determine the symmetries of the curve.r = -5 - 3 sin ?
A. y-axis only B. Origin only C. No symmetry D. x-axis only
Mathematics
Find the number of dots in the nth heptagonal number.
Read and solve the following problem. Then write a paragraph describing the method you
used to get your solutions. Which problem solving strategies did you use and why?
The heptagonal numbers are the whole numbers that represent the following shapes.
Mathematics
Determine the size of the matrix.
A. 3 × 3 B. 2 × 3 C. 6 × 6 D. 9
Mathematics