Plz help me out, this is from a study guide for my test today! thank you!

Which statement describes the term economics? a. it is the study of using limited resources to fulfill wants and needs. b. it is the study of how governments fulfill the wants and needs of nations. c. it is the study of how people spend their money to fulfill wants and needs.

Which interval for the graphed function contains the local maximum? [–3, –2] [–2, 0] [0, 2] [2, 4]

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x