Try the x and y values in the equations and see which works. A.) 1 = 5*7 +4 . . . . nope B.) 1 = -7 +8 . . . . . true C.) 1 = 7 -10 . . . . . nope D.) 1 = -4*7 +3 . . . nope
The answer to this question <span>What is the sum of the first eight terms of a geometric series whose first term is 3 and whose common ratio is 1/2 is (7/65/128)</span>