Which of the following platonic solids is also a pyramid?
a. tetrahedron
b. hexahedron
c. octahedron
d. icosahedron e. dodecahedron f. none of these

Which statement is true about the local minimum of the graphed function? over the interval[-4,-2], the local minimum is 0. over the interval [-2,-1] , the local minimum is 25. over the interval [-1,4], the local minimum is 0. over the interval [4,7], the local minimum is -7