6. Add 3 ! 25 - 5 1 125 (Carry 3 decimal! places throughout calculations and round off to 2 decimal places at end.) (A) 5.83 1 59.04\" (B) 6.26 A -26.85" (C) 2.03 Z 205.2? (D) - 2001-19009" (E) none of these 12. Two vectors act on a point as shown as right. What is the resultant vector? (Carry 3 decimal places throughout calculations and round off to 7 2 decimal places at end.) 30 3 (A) 4.00 / 210.00 (B) 3.95 / 159.570 (C) 6.08 / 175.290 (D) 7.62 / 203.20 (E) none of these 13. Since pH = - log H*, what is the pH of a solution where the H is 0.723 mole/liter ? (Round to 4 digits.) (A) .1409 (B) 5.284 (C) - 7.099 (D) - .1409 (E) none of these 14. Solve for y: log, (50 - 4y) - log, (18 - y) = log, 2 (A) 61 V129 (B) 10 (C) 7 (D) 66 5 (E) none of these 15. Which inequality corresponds to the graph at right ? (A) ( XER | X-1/4} (B) XER - 3