THE NUMBER OF COSTUMERS IN A STORE ON THE FIRST DAY IS REPRESENTED BY (6x-3). THE NUMBER OF CUSTOMERS ON THE SECOND DAY IS REPRESENTED BY (x-1). WRITE AN EXPRESSION TO FIND HOW MANY CUSTOMERS VISITED THE STORE ON THE FIRST DAY. THEN EVALUATE THE EXPRESSION IF x IS EQUAL TO 50.

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

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)

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.