Noah has a total of 50 video games. He only buys action games and sports games. He has 20 more action games than sports games. How many action games and how many sports games does he have? Use substitution to solve this system of equations.

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

Sorry guys but as you have a small brain