Separate the number 18 into two parts where the product of the two parts is 77

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

Plz ( true - false) all triangles have interior angles whose measure sum to 90.