What is the vertex of the quadratic function f(x)=2x^2+4x+3

a.) (-1,1)
b.) (0,3)
c.) (1,-1)
d.) (3,0)

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.