Bryn is riding his bike at a constant speed from school to the library. His distance from the library in kilometers, x hours after leaving school can be modeled by the equation y = 20 – 12x. What do x, y, 20, and 12 represent in the equation? Be sure to specify units.

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

You can find the constant of proportionality by finding the ratio of