Determine whether the function is a one-to-one function.y = x2 + 8x + 22, x ? -4
A. Yes
B. No
Answer: A
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Solve the problem.In the formula A = Iekt, A is the amount of radioactive material remaining from an initial amount I at a given time t and k is a negative constant determined by the nature of the material. A certain radioactive isotope has a half-life of approximately 900 years. How many years would be required for a given amount of this isotope to decay to 75% of that amount?
A. 299 yr B. 225 yr C. 374 yr D. 1800 yr
Provide an appropriate response.It can be shown that the inequalities 1 - 
< 
< 1 hold for all values of x close to zero. What, if anything, does this tell you about 
Explain.
What will be an ideal response?
Find an equation for the surface consisting of all points that are equidistant from the point (0,-4,0) and the plane y=4.
What will be an ideal response?
Use a scientific calculator to approximate the common logarithm. Round to four decimal places.log 2.18
A. 0.3579 B. 0.3181 C. 0.7793 D. 0.3385