Answer:
Her new hourly wage will be $13.80 after the raise
Explanation:
Percentages
Noelle currently earns $12 per hour.
Her hourly wage will increase by 15% by next month.
The increase will be of:
15% of $12 = 15*12/100 = $1.80
Thus, her new hourly wage will be
$12 + $1.80 = $13.80
Her new hourly wage will be $13.80 after the raise