Combine and simplify, if possible.7
+ 8
A. 31
B. 15
C. -31
D. 17
Answer: A
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
Solve the system by the elimination method.3x + 2y = -5-9x - 6y = -15
A. {(-15, -10)} B. {(15, 10)} C. {(x, y)|3x + 2y = -5} D. ?
Mathematics
Convert to an exponential equation.logwQ = 9
A. 9w = Q B. w9 = Q C. Qw = 9 D. Q9 = w
Mathematics
For the given quadratic equation, use the discriminant to determine the number and type of solutions.4x2 + 8x + 4 = 0
A. Two nonreal complex B. Two real C. One real
Mathematics