Which is the most accurate name for the polygon shown?

concave pentagon

convex pentagon

concave hexagon

convex hexagon

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

What is the difference between a linear interval and a nonlinear interval?

Megan and desmond each add the same amount of water to their aquarium megan makes 5 ml of chemical solution with every gallon of water for her aquarium desmond mixed 8 ml of chemical solution for every 2 gallon of the water for his aquarium.