Arectangle has a fixed width of 8 inches and a length of 0 inches. the length of the rectangle then begins increasing at 2.4 inches per second.
a) write a formula that expresses the length of the rectangle in inches, l, in terms of the number of seconds t since the rectangle began growing.
b) write a formula that expresses the perimeter of the rectangle in inches, p, in terms of the length of the rectangle in inches, l.
c) write a formula that expresses the perimeter of the rectangle in inches, p, in terms of the number of seconds t since the rectangle began growing.
d) suppose the function g determines the perimeter of the rectangle in inches given a number of seconds t since the rectangle started growing. write a function formula for g.