HELP PLEASE! Identify if the scenario is proportional or non-proportional, if proportional identify the constant of proportionality in terms of x and y. Mindy is mixing a cleaning solution of 1 part bleach to 10 parts water.
Proportional or non-proportional?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Write the expression as a single natural logarithm. 2 in a - 4 in y

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83