Find the perimeter of the following shape, rounded to the nearest tenth:

shape abcd is shown. point a is at 5, 5. point b is at 7, 3. point c is at 3, 0. point d is at 1, 2.

12.5
15.7
16
16.5

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?

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?