A worker has a base pay of $20 per hour, gets $4 more per hour after 8 hours, and gets $5 more per hour(from base pay) after 10 hours. How much would he make in a 15 hour day?

$333

Step-by-step explanation:

From the information given, the worker would get the base pay of $20 per hour, $4 more per hour after 8 hours  which would be $24 per hour and $5 more per hour from the base pay which would be $25 per hour after 10 hours. This means that the person would receive $20 per hour for 8 hours, $24 per hour after 8 hours until 10 hours and $25 per hour after 10 hours:

Total earnings=($20*8)+($24*2)+($25*5)

Total earnings=$160+$48+$125

Total earnings=$333

According to this, the worker would make $333 in a 15 hour day.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

if x = 1, then the answer is 3.5