Eve went to a pizza place with 2 friends. they ordered a large mushroom pizza for $11.30 and a garden salad for $6.10. they also got 2 sodas for $1.15 each. the tax came to $1.05.
how much change should they have received from $25.00?

Me because some of question i don’t understand

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

Math it's appreciated. (picture provided)