Plz help There are 30 birds in an enclosure at the zoo.

- 1/5 of them are native to North America

- 1/3 of them are native to South America

The remaining birds in the enclosure are native to Australia. How many of the birds are native to Australia?

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?

What does x = in this equation x+3+2x=x+5

How do you find the distance of each number from the mean