Let A and B be sets with cardinal numbers, n(A) = a and n(B) = b, respectively. Decide whether the statement is true or false.n(A - B) = n(B - A)
A. True
B. False
Answer: B
Mathematics
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Find the sum Sn of the first n terms of the geometric sequence. -8, -16, -32, -64, -128, . . . ; n = 9
A. -4108 B. -4051 C. -4088 D. -4086
Mathematics
Graph the function.The height (in m) of a projectile as a function of the time t (in s) is given by the function 
Plot h as a function of t.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Linda is staying at a ski resort. She is hoping for cold temperatures for the best skiing conditions. The minimum temperatures for the last three nights have been 
and 
Which of these temperatures was the coldest?
A. -4.1°C B. -1°C C. -3.9°C
Mathematics
Write the number in scientific notation.0.000421
A. 4.21 × 10-3 B. 4.21 × 10-4 C. 4.21 × 10-5 D. 4.21 × 104
Mathematics