Which is longer 6 ft or 70 inches

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

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.