What is the mean for the data set?

682, 605, 648, 678, 654, 612, 606, 621, 642, 679

express your answer as a decimal to the nearest tenth.

633

631.5

642.7

654

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 are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.