The perimeter of parallelogram ABCD is 78 cm. AD is 9 cm more than twice AB. Find the lengths of all four sides of ABCD.

Use set buikder notation to represent the following set: {, -2, -1, 0}

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.

In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)