632 points The following are ways that isotopes can be useful in medicine. (select all that apply) Radioactive isotopes can be used to detect Alzheimer's disease. Radioactive isotopes can be used to prevent bacterial contamination of vegetables. Radioactive isotopes can be used as tracers to detect molecular changes or to destroy abnormal or infectious cells. Radioactive isotopes can be used to sterilize medical equipment. Radioactive isotopes can be used to regenerate damaged tissues.

Graph \( f(x)=-x^{2}-1 \) on the Cartesian plane to the right. \( f(x) \) is increasing on the interval(s): \( f(x) \) is decreasing on the interval(s): \( x=\square \) has a maximum of \( x=\square \) The domain of \( f(x) \) is: The range of \( f(x) \) is: If any of the above do not exist, enter DNE.

Solve the system of equations. Give your answer as an ordered pair \( (x, y) \) \( \left\{\begin{array}{l}x \\ -2 x-5 y=-23\end{array}\right. \) One solution: No solution Infinite number of solutions \( 0^{8} \times \)

\( 1<\begin{array}{l}\text { Let } g(x)=-x^{2}+6 x+1 . \text { Find and simplify } g(-4) \\ g(-4)=\square(\text { Simplify your answer.) }\end{array} \)

Solve by Substitution \( \left\{\begin{aligned} 4 x+y=-10 \\ -4 y=43+16 x\end{aligned}\right. \) One solution: No solution Infinite number of solutions

b) \( 64-(35)+(-35)-46(2) \)