The new salary = $103,500
Step-by-step explanation:
The annual salary = $90000
The percentage increase = 15%
The increase = the annual salary × percentage increase
The increase = $90000 × 15% = 90000 × 0.15
The increase = 13500
The new salary = her annual salary + increase
The new salary = 90000 + 13500
The new salary = $103,500