how many cups of 25% soap solution must be added to 12 cups of 50% soap solution to result in a mixture that is 40% soap solution

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _