Which expression is not equivalent to the other expressions? 1.) -6(2 x - 4)
2.) -4(3 x + 6)
3.) -(12 x - 6) + 18
4.) -3(4 x - 3) + 15
this is multiple choice

Apasta salad was chilled in the refrigerator at 35° f overnight for 9 hours. the temperature of the pasta dish dropped from 86° f to 38° f. what was the average rate of cooling per hour?