The perimeter of a triangle is 6x. one side is x+3 and another side is 2x+4. what is the length of the 3rd side?

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

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

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.