A45 gram sample of a substance that's used
to preserve fruit and vegetables has a k-value
of 0.1109.
n = noe-kt
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

what is the substance’s half-life, in days?

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.