Charla wants to determine the vertex of the function f(x) = x2 - 18x + 60 by changing the function into vertex form. Which statement about the vertex of the function is true?

What are the main functions of the human skeleton? a exchange of gases b support and movement c sensing the environment d digestion and excretion

Assume that the banner needs to be 18 feet long instead of 15 feet

Which statements describe continental crust? select the three correct answers. a-it is formed in all parts of the continents. b-it is made mostly of volcanic rock. c-it is destroyed by melting near the top of the mantle. d-it is less than 10 km thick. e-its ages ranges from very young to more than 4 billion years old.