Perform the indicated operation. Assume that all variables are nonnegative.
(2
+ 8)
A. 30
B. 6
+ 8
C. 14
D. 6
+ 8
Answer: D
Mathematics
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Solve the problem.A bacterial culture has an initial population of 10,000. If its population declines to 4000 in 4 hours, when will its population be 2530? Assume that the population decreases according to the exponential model.
A. after 6 hours B. after 9 hours C. after 5 hours D. after 7 hours
Mathematics
Find the equation of the set of points P satisfying the given condition.The sum of the distances of P from (±1, 0) is 10.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the slope of the line tangent to the curve at the given value of x.y = 6 - 4x2; x = 1
A. 8 B. -8 C. 14 D. -2
Mathematics
Use an equation to solve the percent problem.15 is 6% of what number?
A. 90 B. 250 C. 2500 D. 25
Mathematics