Amusic shop has 5 different brands of guitar strings. the 5 different brands sell for $16, $20, $15, $11, and $13. what is the mean absolute deviation of the prices? round to the nearest cent, if necessary.

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