Decide whether or not the set is closed under multiplication.{Whole numbers}
A. Closed
B. Not closed
Answer: A
Mathematics
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Find the sum of the n terms of the indicated geometric sequence with the given values.160, -80, 40, . . . ; n = 6
A. 105
B. 
C. 110
D. 315
Mathematics
Identify the x- and y-intercepts of the graph of the equation. 3x + 2y = 15
 figure 1.png)
Mathematics
Solve the equation. Express irrational answers in exact form and as a decimal rounded to 3 decimal places.ln x + ln (x + 5) = -3
A. -5 + 
? 0.020
B. 
? 2.505
C. 
? -5.010
D. 
? 0.010
Mathematics
Solve the problem.The table below shows the results of a consumer survey of annual incomes in 100 households. 
What is the probability that a household has an annual income less than $25,000?
A. 0.23 B. 0.55 C. 0.72 D. 0.28
Mathematics