Miranda and savannah are excited that a new store just opened in town! they go together the first day it opens! each time miranda goes to the store she plans to spend \$7$7dollar sign, 7, and each time savannah goes to the store she plans to spend \$9$9dollar sign, 9. a few weeks from now, miranda and savannah are surprised to find out that they have spent the exact same total amount of money at the store. what is the least possible number of times that miranda has been to the store?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)