Answer:
add them
Step-by-step explanation:
you have to add them all up because it says find the range
Answer: 
Step-by-step explanation:
Given :

add 2 to both sides

Therefore :


Answer:
a slice is made perpendicular to the base through the vertex: triangle
slice is made perpendicular to the base and not through the vertex: trapezoid
Step-by-step explanation:
a slice is made perpendicular to the base through the vertex: triangle
slice is made perpendicular to the base and not through the vertex: trapezoid