A security guard, acting as a witness in a trial, testified that he observed 20 cars in a parking lot. Of the cars he observed, 12 were convertibles, 15 had out-of-state plates, and 5 were convertibles with out-of-state plates. The witness telling the truth because the information

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

On friday, there were x students at the baseball game. on monday, there were half as many students at the game as there were on friday. on wednesday, there were 32 fewer students at the game as there were on friday. which expression could represent the total number of tickets sold for all 3 games?

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?