Solve the problem.A bacterial culture has an initial population of 10,000. If its population declines to 3000 in 8 hours, what will it be at the end of 10 hours? Assume that the population decreases according to the exponential model.
A. 3500
B. 1110
C. 403
D. 2220
Answer: D
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Solve. Provide answers in interval notation.9 ? 
A. 
B. 
? 
C. 
? 
D. 
Find A-1 if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Provide an appropriate response.In a raffle 1000 tickets are being sold at $1.00 each. The first prize is $100, and there are 3 second prizes fo $50 each. By how much does the price of a ticket exceed its expected value?
A. $1.00 B. $0.75 C. $1.75 D. $50
Solve the problem.Jeff received a gift from his grandfather of $6000, which he invested at an annually compounded interest rate of 
. Let V = f(t) represent the value (in dollars)of the account after t years or any fraction thereafter. Find an equation for f. What will be the value of the investment in 12 years?
A. V = 6000(1.12)t-1; $20,871.30 B. V = 6000(1.12)t; $23,375.86 C. V = 6000 + (720)(t - 1); $13,920.00 D. V = 6000 + t(720); $14,640.00