7 is what percent of 105

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.