are these correct? How do i do 17?

Use this space for 14 Which system of equations has the same solution as the system computations. below? 2x + 2y = 16 3x - y = 4 (1) 2x + 2y = 16 (3) x ty = 16 6x - 2y = 4 3x - y = 4 (2) 2x + 2y = 16 (4) 6x + 6y = 48 6x - 2y = 8 6x + 2y = 8 3 15 The table below represents the function F. X 3 4 6 7 8 F(x) 9 17 65 129 257 The equation that represents this function is (1) F(x) = 3x (3) F(x) = 2" + 1 (2) F(x) = 3x (4) F(x) = 2x + 3 2 16 John has four more nickels than dimes in his pocket, for a total of $1.25. Which equation could be used to determine the number of dimes, x, in his pocket? (1) 0.10(x + 4) + 0.05(x) = $1.25 d ty = n (2) 0.05(x + 4) + 0.10(x) = $1.25 (3) 0.10(4x) + 0.05(x) = $1.25 ded (4) 0.05(4x) + 0.10(x) = $1.25 17 If f(x) = ~x + 9, which statement is always true? (1) f( x) 0 (4) If x > 0, then f(x) > 0. Algebra