Estimate the sum or difference by first rounding as indicated.Estimate by first rounding to the nearest thousand.469097158781
A. 27,000
B. 27,400
C. 27,500
D. 28,000
Answer: D
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Write as a number.Round 600 to thousands.
A. 100,000 B. 10,000 C. 100 D. 1000
Simplify.5 ? (5 + 4)2 - 4 ? (6 - 4)2
A. 825 B. 1961 C. 1604 D. 389
Solve.An electronics manufacturer's revenue R for selling x mobile phones is given by 
A competing electronics manufacturer's revenue for selling a similar mobile phone is 
Under what circumstances will both manufacturers make the same revenue?
A. They will make the same revenue if they sell 460 phones. B. They will make the same revenue if they sell 0 or 460 phones. C. They will make the same revenue if they sell 0 or 230 phones. D. They will never make the same revenue.
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2