Solve the equation.10n - 4 = 36
A. 30
B. 34
C. 7
D. 4
Answer: D
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Solve the problem.Suppose that the population of a town can be approximately modeled by the formula 
where t is the time in years after 1980 and P is the population of the town in thousands. Find an expression for 
in terms of t.
A. dP/dt = 
B. dP/dt = 
C. dP/dt = 
D. dP/dt = 
Write each whole number in standard form.Six hundred thirty-eight thousand, nine hundred ninety-seven
A. 638,977 B. 638,997 C. 638,000 D. 638,997,000
Solve the problem.Use the formula Time traveled = 
. A passenger train can travel 360 miles in the same amount of time it takes a freight train to travel 270 miles. If the average velocity of the freight train is 10 miles per hour slower than the average velocity of the passenger train, find the average velocity of each.
A. passenger train: 30 mph freight train: 20 mph B. passenger train: 50 mph freight train: 40 mph C. passenger train: 60 mph freight train: 50 mph D. passenger train: 40 mph freight train: 30 mph
Simplify.
A. x16
B. x6
C. x4
D. 