Find the general rule for the nth term of the arithmetic sequence -2,8,18,28,38

Peaches cost $4.29 per pound. find the cost of two and a quarter pounds of peaches.

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

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.