Which sequence could be partially defined by the recursive formula f (n + 1) = f(n) + 2.5 for n ≥ 1? 2.5, 6.25, 15.625, 39.0625, …

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Solve the triangle. a = 21°, c = 105°, c = 5

Which expression is the factorization of x^2+10+21