a 6-inch plant grew 2/4 of a inch one week and twice as much the following week, How tall is the plant now?

The plant is 6 inches at the start.

It then grows 2/4 of 1 inch. The plant then grew TWICE 2/4 of 1 inch.

So, 2/4 • 2 = 4/4 or 1 inch.

Let h = height of plant

h = 6 + 2/4 + 1

h = 26/4 + 1

h = 7.5 inches