List the key features of the quadratic equation y = x2 - 16. A. X-intercepts: (-16,0) and (16,0), y-intercept: (0,–4), vertex: (0,-4)

B. x-intercept: (4,0), y-intercept: 0,-16), vertex: (0,-16)

C. X-intercepts: (-4,0) and (4,0), y-intercept: 0,-16), vertex: (0,-16)

D. x-intercepts: (-4,0) and (4,0), y-intercept: (0,16), vertex: (0,16)

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?