Find the percent decrease per hour for the bacteria
culture in problem 15.

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Find the solution of each of the following.