Solve.A scientist is growing a colony of bacteria for an experiment. The number of bacteria in the colony can be modeled by the quadratic expression 15x2 - 898x + 14,770, where x is the number of days since the scientist began the experiment. Using this model, after how many days would we expect to find 70,000 bacteria in the colony? Round to the nearest whole day.
A. 48 days
B. 108 days
C. 38 days
D. 98 days
Answer: D
Mathematics
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Find the area of the part of the sphere x² + y² + z² = 36z that lies inside the paraboloid z = x² + y.²
Select the correct answer. a. 6? b. 36? c. 12.5? d. 16? e. 10.5?
Mathematics
Graph the piecewise function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the quadratic inequality by sketching the graph of the corresponding quadratic function.x2 + 4x - 32 > 0
A. Solution: ?
B. Solution: (-?, -8] ? [4, ?)
C. Solution: (-8, 4)
D. Solution: (-?, -8) ? (4, ?)
Mathematics
Solve.
x - 
= -6
A. x = -11 B. x = 13 C. x = 11 D. x = -13
Mathematics