The perimeter of a square is the product of four and the length of a side. which of the following function rules could be used to find the perimeter of a square, represented by y, given the length of a side, represented by x?
a. x = 4y
b. y = 4x
c. y = x + 4
d. x = y + 4

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882