Step 1: Using one-step equations to solve problems. a)
Suppose you send about 12 text messages a day, and your older sister sends
more text messages than you do. Together, you send a total of about 26 messages
per day. About how many text messages does she send a day? Write an equation
and solve for the unknown value. (2 points)
I

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days