9514 1404 393
Answer:
 $(4/3)X
Step-by-step explanation:
Working 12 hours, Samia gets paid for the first 8 hours ...
 8 · ($X) = $8X
For the remaining 4 hours, she is paid ...
 4 · ($2X) = $8X
Then for 12 hours, she is paid a total of ...
 $8X +$8X = $16X
Her average hourly pay is then ...
 total pay / total hours = $16X/12 = $(4/3)X . . . average hourly pay