Answer:

Step-by-step explanation:
Yuan earned $336.3457.
You are asked to round this number to the nearest hundredth, that is, so there are only two digits after the decimal.
$336.34|57
A rule in rounding numbers is: if the first figure to be dropped is 5 with any nonzero digits following it, then the last figure kept should be rounded up (increased by 1).
The number becomes $336.35.

Answer: 18
Step-by-step explanation:
130 you multiply the left side by 13 to get the right side.
He makes $12 an hour because 6x12= 72 plus his 12 dollar tip makes 84