Section: Math

32) If ^-19₆<-4z+7<^-13₆, what is the greatest possible integer value of 16z-28?

1. 10
2. 11
3. 12
4. 13

STEP ONE. Multiply -4 to change the middle expression to 16z-28. 
STEP TWO. Don't forget to reverse inequality signs. 
STEP THREE. Convert the two fractions bookending the inequality. 
STEP FOUR. Look at the options. You want the highest possible integer value to fit the expression. You know 16z-28 is higher than 10 and 11, but it can't be 13, so that leaves Answer 3.