Given that sin A = 1/2 and tan B and tan B = 3, and that angles A and B are both in
Quadrant I, find the exact value of cos(A + B), in simplest radical form.

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Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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.