S≤12 s is equal to or less than 12 because 20 minus 12 equals 8. The class will still be held. Any number less than 12, there will be more students than 8 and the class will still be held.
Theresa's rate is $7.25 dollars per hour.
Subtract 24 from both sides.
z + 24 = 10
- 24 -24
z = -14