A convex polyhedron has 18 edges and 4 more vertices than faces. How many faces does the polyhedron have? Euler's formula: V + F = E + 2
8
12
14
16

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Which expression is not a polynomial?

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.