(Please hurry). P(x) = 2x4 – x3 + 2x2 – k where k is an unknown integer.
P(2) divided by (x + 1) has a remainder of 2.
What is the value of k?

On a piece of paper graph f(x)=5•(0.4)^x

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?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?