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2. Find f(-2) for f(x) = 3x2 - 1. 3. If f(x) = 2(x - 1)2 + 3x, find f(a + 1). Given f(x) = 2x - 1 and g(x) = 2 2, find each function. 4. (xC ) 5. [f g](x) Graph each equation. 6. x - 2y = 4 7. x = -3y +6 ach equation. 8. Find the zero of f(x) = 2x - 5. 9. Write an equation in standard form for a line passing through A(-1, 2) and B(3, 8). 10. Sales The initial cost of a new model of calculator was 10 $120. After the calculator had been on the market for two years, its price dropped to $86. Let x represent the number of years the calculator has been on the market, and let y represent the selling price. Write an equation that models the selling price of the calculator after any given number of years