Let r1 and r2 be the remainders when the polynomials f(x) =x3 +2ax2 - 5x - 7 and g(x) = x3+x2-12x+6a are divided by (x+1) and (x -2) respectively , if 2r1 +r2 =12, find the value of 'a'

Which of the following represents the range of the graph of f(x) below

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Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d