Solve for X.
4(x − 1) = 2x - 19

Simplify the expression. -2/5(10+15m-20n)

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?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)