29. Given that: 2y + 10x + 18 = 4 and 4x y + 11 = 0, solve for x. 30. Referring back to the prior problem, what is y? 31. Given that: 4(3g + 104) - 90 = 504 + 6(g - 14), solve for g. 32. Bill can mow his mother's lawn in 45 minutes. His brother Jim can mow it in 75 minutes. How long will it take them to do it together, if each has his own lawnmower? (Record your answer in minutes rounded to one decimal place. For example, if the answer you find is 14.2835 minutes, record 14.3). 33. On a particular day, the campus bookstore sold 30 T-shirts. White ones cost $9.95 and yellow ones cost $10.50. Total sales of T-shits were $310.60. How many white shirts were sold? 34. Referring back to the prior problem, how many yellow shirts were sold? 35. If working alone, Marcus can paint a room in 3.15 hours. Working together with Claudia, they can both paint the room in 2.09 hours. How long would it take Claudia working alone to paint the room? 36. The weight of a bag of bricks plus 20% of its weight is 30 pounds. How much does the bag of bricks weigh, in pounds