1. Which set of coordinates describes a function? {(- 5, - 1), (- 3, - 3), (- 1, - 5), (- 5, - 7)} {( 6, 3), (4, 5), (2, 3), (0, 5)} {( 4, - 3), (-4,- 6), ( 4, 3), (-4, 6)} {( 2, 4), ( 2, - 4), ( 4, 8), ( 6, 2)} 2. For Saturday's debate tournament, Sarah ordered 3 cookies for each student participant and a tray of 30 cookies for the sponsors' hospitality room. This relationship can be expressed by the function f(s) = 3x + 30, where s is the number of student participants. Which is the dependent quantity in this functional relationship? The number of cookies ordered b. The number of trays ordered c. The number of student participants d. The number of sponsors 3. If f(x)=2x^2,then f(3) is equal to a.3 b.9 С.18 d.33 4. If f(x)=4x-3 and g(x)=4+5x, then f(x)+g(x) is qual to

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