Subtract.Subtract (6x8 - 4x4 + 5x3 - 11) from (11x8 + 7x7 - 8x3 + 2) .
A. -5x8 + 7x7 + 4x4 - 13x3 + 13
B. 5x8 + 7x7 + 4x4 - 13x3 + 13
C. 5x8 + 7x7 - 4x4 - 13x3 + 13
D. -5x8 + 7x7 - 4x4 - 13x3 + 13
Answer: B
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Find the center of mass of a thin plate of constant density covering the given region.The region cut from the first quadrant by the circle x2 + y2 = 64
A. 
= 0, 
= 
B. 
= 
, 
= 
C. 
= 4, 
= 4
D. 
= 
, 
= 
Use a calculator with a 
key or a 
key to solve the problem.The exponential function f(x) = 47.36(1.027)x describes the population of a certain country, y, in millions, in year x. a) Substitute 0 for x and, without using a calculator, find the country's population in year 0. b) Find the country's population in year 27 as predicted by this function.
A. a) 1 million; b) 102.554 million B. a) 47.36 million; b) 97.233 million C. a) 47.36 million; b) 99.858 million D. a) 1.027 million; b) 94.677 million
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 
Write in decimal notation.7.174 × 10-5
A. 0.0007174 B. -717,400 C. 0.000007174 D. 0.00007174