1. If 3 x + 4 y = 14 then 6 x + 8 y is equal to   28   14   56   42   none of these   Hint Half-n-half Clue   2. There are 480  animals on a farm. Three-fourths of them are cows. Of the cows, about 50% are white. How many cows on the farm are not white?   360   180   240   180   120   Half-n-half Clue   3. Of the S students enrolled in a Programming Course, 80% take the Certification Examination. 40% of the students who take the Certification Examination pass it. In this Certification Examination, students who pass the examination are what percent of the students enrolled in the Programming Course?   32   40   0.40 S   80   0.32 S   Half-n-half Clue   4. Last month, Mr. Anderson spent 5% of his salary to pay his electricity bill, 13% to pay his phone bill, and 42% for general monthly expenses. If his salary is $ 2500, then his savings last month was   $ 1050   $ 1000   $ 1500   $ 325   $ 125   Half-n-half Clue