Suppose that 9% of teachers at a university attend a conference. if 4000 teachers are enrolled at the university, about how many teachers attended the conference?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?