Divide.
A. 15
B. 1
C. 0
D. 5
Answer: D
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Solve the problem.For a particular radioactive sample, the decay rate C in disintegrations per second can be modeled by the equation logeC = loge194 - 0.09t, where t is the elapsed time in minutes. Solve this equation for the decay rate C as a function of time t.
A. C = 194e0.09t B. C = e194 + e-0.09t C. C = 194e-0.09t D. C = 194 + e-0.09t
Find the product.(3x + 7)(x + 3)
A. 3x2 + 16x + 21 B. x2 + 16x + 15 C. x2 + 21x + 16 D. 3x2 + 15x + 21
Find the mean. Round to the nearest tenth when necessary.The population on a certain tropical island has increased significantly over the last 30 years. An increase in population is projected for 2010. Find an approximate value for the mean population from 1970 to 2010 by using all of the values in the following chart.
*estimated
A. Mean = 136,200 B. Mean = 126,750 C. Mean = 170,250 D. Mean = 101,400
Solve by using the quadratic formula.
q2 - q + 2 = 0
A. 
, -6
B. 
, 6
C. - 
, -6
D. - 
, 6