Which expression is the same value as 3(4 times + 9) -6 x

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Need solving this second acceleration problem.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0