The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation , where d is the number of days since the sample weight was 500 g.
a or b?
a.
linear model
b.
nonlinear model

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation