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Solve the problem. A box contains a radioactive substance.  The number of kilograms, r(t), at time t years is given by r(t) = 2-0.002588t.  How long will it take until only one-half kilogram of the radioactive substance is left in the box?

Solve the equation for x by first rewriting both sides as powers of the same base. 81x = 9

Solve the equation for x by first rewriting both sides as powers of the same base.

Convert to a logarithmic equation. 

Solve the problem.An initial investment of $1000 is appreciated for 5 years in an account that earns 12% interest, compounded annually. Find the amount of money in the account at the end of the period.

Solve the logarithmic equation.log(x – 3) = 1 – log x

Solve the problem.An initial investment of $480 is appreciated for 7 years in an account that earns 15% interest, compounded quarterly. Find the amount of money in the account at the end of the period.

Convert to an exponential equation.log31 = 0

A nurse is reviewing The Joint Commission National Patient Safety Goals. Which standard(s) ensure patient safety? (Select all that apply)

The nurse is conducting a physical assessment on a patient. When performing inspection, auscultation and palpation on the organs listed below, which of the following should the nurse change their order of assessment and palpate last?