PLEASE ANSWER! WILL GIVE BRAINLIEST. The ratios 9:18, 12:24, 15:30, 18:36, and 21:42 form a pattern of
equivalent ratios in the table below.

Which is another ratio in this pattern?
A. 1:3
B. 6:12
C. 24:27
D. 28:49

For each proportion find the unknown number x 1/5/8=×/15

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)

What is the total area of the figure?