Use the chain rule to find dw/dt. w = xey/z, x = t7, y = 4 − t, z = 2 + 9t

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

Can you simplify 4/7? 24 points will be awarded!

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