For every 8 hours of work, doug earns $120 if doug works 40 hours, how much will he earn?

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?

10% of 1,900,000. show me how you got the answer

Could somebody me with this radical simplification?