Pls I need your help dues today The number of students is a chess club decreased from 43 to 11 what is the percent decrease round your answer to the nearest decrease is

What is the value of x in the diagram below?

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?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)