Brian Costa deposited $20,000 in a new savings account at 12% interest compounded semiannually. At the beginning of year 4, Brian deposits an additional $30,000 at 12% interest compounded semiannually. At the end of 6 years, what is the balance in Brian's account?

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.