Solve the inequality, then graph the solution.-5 <
? 8
A.
B.
C.
D. ?
Answer: C
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Solve.Find the hydrogen ion concentration of a solution whose pH is 8.2. Use the formula
A. -0.9138139 B. 1.58 × 108 C. 0.91381385 D. 6.31 × 10-9
Solve the problem.The following graph indicates the hourly temperature in Riversbend, IL from 11 P.M. on March 6, 2008 to 7 A.M. on March 7, 2008. The function t(x) = -1.29x2 + 8.80x + 42.69 can be used to estimate the hourly temperature in Riversbend, where x is the number of hours after midnight. Use the graph to determine the hour(s) that the temperature was a maximum.
A. 7 A.M. B. 11 P.M. C. 3 A.M., 4 A.M. D. 2 A.M.
Solve the problem.A nuclear scientist has a sample of of a radioactive material which has a half-life in hours. She monitors the amount of radioactive material over a period of a day and obtains the following data. Use a graphing utility to fit an exponential function to the data. Predict the amount of material remaining at 40 hours.
.
A. y = 86e-0.071x, 5.0 mg B. y = 100e-0.077x, 6.7 mg C. y = 100e-0.077x, 4.6 mg D. y = 92e-0.0686x, 5.9 mg
Divide if possible.
A. 1 B. 12 C. 0 D. Undefined