If f(1)=1 and f(n+1)=f(n)^2+4 then find the value of f(4)

Ihave this math question 2/3 ÷2 1/10=

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

Two lines parallel to a third line are parallel to each other. always sometimes or never