How do you write this equation in its simplest form
(3d+5)+(d-2)

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.