The sales tax is 5% and you also have to leave a 15% tip, the meal is 15$ what would the cost be after the tip and tax

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

In the geometric progression –3, 12, −48… what term is 3,072?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x