At the beginning of the month, Evan had $24 in his account at the
school bookstore. Use a variable to represent the unknown quantity in
each transaction below and write an equation to represent it. Then
represent each transaction on a number line. What is the unknown
quantity in each case?

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

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)

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.