Gary's Pizzeria made 45 pizzas. 31 of the pizzas had thin crust and the rest had thick crust, What is the ratio of the number of thin crust pizzas to the number of thick crust pizzas?
Write your answer as two numbers separated by a colon (for example, 2:3)

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels