Which statement shows how two polynomials 4x+6 and 2x^2-8x demonstrate the closure property when multiplied?
a. 8x^3-20x^2-48x is a polynomial
b. 8x^3-20x^2+48x may or may not be a polynomial
c. 8x^2-32x^2-14x is a polynomial
d. 8x^3-32x^2+14x may or may not be a polynomial

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

Which linear inequality is represented by the graph?

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x,y,z) = (1,-x,z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)