A floor 16cm by 12cm is to be tiled 40cm by 30cm. Each tile cost $40.00. a) Find how many tiles are needed.
b) What is the cost of tilling the floor?​

Need on this one asap im almost done with this subject

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)